diff --git a/.vscode/settings.json b/.vscode/settings.json
index eb5fd6e..ae37769 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -11,6 +11,7 @@
     "**/.venv/*/**": true
   },
   "cSpell.words": [
+    "backref",
     "bookname",
     "Btns",
     "flowbite",
diff --git a/app/controllers/get_or_create_permission.py b/app/controllers/get_or_create_permission.py
index 7c288b5..8fcdaa6 100644
--- a/app/controllers/get_or_create_permission.py
+++ b/app/controllers/get_or_create_permission.py
@@ -1,10 +1,14 @@
 from app import models as m
+from app.logger import log
 
 
-def get_or_create_permission(access: int, entity: m.Permission.Entity):
+def get_or_create_permission(access: int, entity_type: m.Permission.Entity):
     permission: m.Permission = m.Permission.query.filter_by(
-        access=access, entity=entity
+        access=access, entity_type=entity_type
     ).first()
     if not permission:
-        permission: m.Permission = m.Permission(access=access, entity=entity).save()
+        log(log.INFO, "Create permission [%d] for entity [%s]", access, entity_type)
+        permission: m.Permission = m.Permission(
+            access=access, entity_type=entity_type
+        ).save()
     return permission
diff --git a/app/controllers/init_access_groups.py b/app/controllers/init_access_groups.py
new file mode 100644
index 0000000..6a03920
--- /dev/null
+++ b/app/controllers/init_access_groups.py
@@ -0,0 +1,29 @@
+from app import models as m
+from app.logger import log
+from .get_or_create_permission import get_or_create_permission
+
+
+def create_moderator_group():
+    log(log.INFO, "Create moderator access group")
+    group: m.AccessGroup = m.AccessGroup(name="moderator").save()
+
+    interpretation_DA = get_or_create_permission(
+        access=m.Permission.Access.D | m.Permission.Access.A,
+        entity_type=m.Permission.Entity.INTERPRETATION,
+    )
+    comment_DA = get_or_create_permission(
+        access=m.Permission.Access.D | m.Permission.Access.A,
+        entity_type=m.Permission.Entity.COMMENT,
+    )
+
+    log(log.INFO, "Add permission [%d] to group[%d]", interpretation_DA.id, group.id)
+    m.PermissionAccessGroups(
+        permission_id=interpretation_DA.id, access_group_id=group.id
+    ).save()
+
+    log(log.INFO, "Add permission [%d] to group[%d]", comment_DA.id, group.id)
+    m.PermissionAccessGroups(
+        permission_id=comment_DA.id, access_group_id=group.id
+    ).save()
+
+    return group
diff --git a/app/models/__init__.py b/app/models/__init__.py
index 62e385f..079683f 100644
--- a/app/models/__init__.py
+++ b/app/models/__init__.py
@@ -18,4 +18,8 @@ from .permission import (
     AccessGroup,
     UserAccessGroups,
     PermissionAccessGroups,
+    BookAccessGroups,
+    CollectionAccessGroups,
+    SectionAccessGroups,
+    InterpretationAccessGroups,
 )
diff --git a/app/models/book.py b/app/models/book.py
index 0cff49a..12d252e 100644
--- a/app/models/book.py
+++ b/app/models/book.py
@@ -19,6 +19,13 @@ class Book(BaseModel):
     stars = db.relationship("User", secondary="books_stars", back_populates="stars")
     contributors = db.relationship("BookContributor")
     versions = db.relationship("BookVersion", order_by="asc(BookVersion.id)")
+    list_access_groups = db.relationship(
+        "AccessGroup"
+    )  # all access_groups in current book(in nested entities)
+    access_groups = db.relationship(
+        "AccessGroup",
+        secondary="books_access_groups",
+    )  # access_groups related to current entity
 
     def __repr__(self):
         return f"<{self.id}: {self.label}>"
diff --git a/app/models/collection.py b/app/models/collection.py
index 39c6313..3d6d13f 100644
--- a/app/models/collection.py
+++ b/app/models/collection.py
@@ -25,6 +25,10 @@ class Collection(BaseModel):
         order_by="asc(Collection.id)",
     )
     sections = db.relationship("Section")
+    access_groups = db.relationship(
+        "AccessGroup",
+        secondary="collections_access_groups",
+    )  # access_groups related to current entity
 
     def __repr__(self):
         return f"<{self.id}: {self.label}>"
diff --git a/app/models/interpretation.py b/app/models/interpretation.py
index e9a88ba..5fbd2fb 100644
--- a/app/models/interpretation.py
+++ b/app/models/interpretation.py
@@ -25,6 +25,10 @@ class Interpretation(BaseModel):
         secondary="interpretation_tags",
         back_populates="interpretations",
     )
+    access_groups = db.relationship(
+        "AccessGroup",
+        secondary="interpretations_access_groups",
+    )  # access_groups related to current entity
 
     @property
     def vote_count(self):
diff --git a/app/models/permission/__init__.py b/app/models/permission/__init__.py
index 98c8b47..a8e8c46 100644
--- a/app/models/permission/__init__.py
+++ b/app/models/permission/__init__.py
@@ -3,6 +3,10 @@ from .access_group import AccessGroup
 from .permission import Permission
 from .user_access_groups import UserAccessGroups
 from .permission_access_groups import PermissionAccessGroups
+from .book_access_groups import BookAccessGroups
+from .collection_access_groups import CollectionAccessGroups
+from .section_access_groups import SectionAccessGroups
+from .interpretation_access_groups import InterpretationAccessGroups
 
 # access groups
 #   moderators(by default empty) -> root collection -> CRUD Interpretation, Comment
@@ -26,6 +30,7 @@ from .permission_access_groups import PermissionAccessGroups
 
 
 # Book
+# Version:
 #   Root Collection
 #       Collection A
 #           Section
@@ -40,3 +45,13 @@ from .permission_access_groups import PermissionAccessGroups
 
 # If the user has CRUD access to Collection B it means that
 # it has access to all nested entities(SubCollection B.1/B.2, Sections)
+
+
+# 1) Create moderator_AG and editor_AG on book create
+# 2) Inherit parent's access groups
+
+# TODO many to many
+# book -> access_group
+# collections -> access_group
+# section -> access_group
+# interpretation -> access_group
diff --git a/app/models/permission/access_group.py b/app/models/permission/access_group.py
index 1620e7d..6f8c63e 100644
--- a/app/models/permission/access_group.py
+++ b/app/models/permission/access_group.py
@@ -5,9 +5,13 @@ from app.models.utils import BaseModel
 class AccessGroup(BaseModel):
     __tablename__ = "access_groups"
 
-    name = db.Column(db.String(32), unique=True, nullable=False)
+    name = db.Column(db.String(32), nullable=False)
+
+    # Foreign Keys
+    book_id = db.Column(db.Integer, db.ForeignKey("books.id"))
 
     # Relationships
+    book = db.relationship("Book", viewonly=True)
     permissions = db.relationship(
         "Permission",
         secondary="permissions_access_groups",
diff --git a/app/models/permission/book_access_groups.py b/app/models/permission/book_access_groups.py
new file mode 100644
index 0000000..2a8f83f
--- /dev/null
+++ b/app/models/permission/book_access_groups.py
@@ -0,0 +1,13 @@
+from app import db
+from app.models.utils import BaseModel
+
+
+class BookAccessGroups(BaseModel):
+    __tablename__ = "books_access_groups"
+
+    # Foreign keys
+    book_id = db.Column(db.Integer, db.ForeignKey("books.id"))
+    access_group_id = db.Column(db.Integer, db.ForeignKey("access_groups.id"))
+
+    def __repr__(self):
+        return f"<b:{self.book_id} to a_g:{self.access_group_id}"
diff --git a/app/models/permission/collection_access_groups.py b/app/models/permission/collection_access_groups.py
new file mode 100644
index 0000000..3f0a179
--- /dev/null
+++ b/app/models/permission/collection_access_groups.py
@@ -0,0 +1,13 @@
+from app import db
+from app.models.utils import BaseModel
+
+
+class CollectionAccessGroups(BaseModel):
+    __tablename__ = "collections_access_groups"
+
+    # Foreign keys
+    collection_id = db.Column(db.Integer, db.ForeignKey("collections.id"))
+    access_group_id = db.Column(db.Integer, db.ForeignKey("access_groups.id"))
+
+    def __repr__(self):
+        return f"<c:{self.collection_id} to a_g:{self.access_group_id}"
diff --git a/app/models/permission/interpretation_access_groups.py b/app/models/permission/interpretation_access_groups.py
new file mode 100644
index 0000000..a193952
--- /dev/null
+++ b/app/models/permission/interpretation_access_groups.py
@@ -0,0 +1,13 @@
+from app import db
+from app.models.utils import BaseModel
+
+
+class InterpretationAccessGroups(BaseModel):
+    __tablename__ = "interpretations_access_groups"
+
+    # Foreign keys
+    interpretation_id = db.Column(db.Integer, db.ForeignKey("interpretations.id"))
+    access_group_id = db.Column(db.Integer, db.ForeignKey("access_groups.id"))
+
+    def __repr__(self):
+        return f"<c:{self.interpretation_id} to a_g:{self.access_group_id}"
diff --git a/app/models/permission/permission.py b/app/models/permission/permission.py
index 43a637d..24104a6 100644
--- a/app/models/permission/permission.py
+++ b/app/models/permission/permission.py
@@ -8,10 +8,10 @@ class Permission(BaseModel):
     __tablename__ = "permissions"
 
     class Access(IntEnum):
-        C = 1  # 0b0001
-        R = 2  # 0b0010
-        U = 4  # 0b0100
-        D = 8  # 0b1000
+        C = 1  # 0b0001 - Create
+        U = 2  # 0b0010 - Update
+        D = 4  # 0b0100 - Delete
+        A = 8  # 0b1000 - Approve
         # sum = 0b1111
 
     class Entity(IntEnum):
@@ -22,8 +22,8 @@ class Permission(BaseModel):
         INTERPRETATION = 4
         COMMENT = 5
 
-    access = db.Column(db.Integer(), default=Access.C | Access.R | Access.U | Access.D)
-    entity = db.Column(db.Enum(Entity), default=Entity.UNKNOWN)
+    access = db.Column(db.Integer(), default=Access.C | Access.U | Access.D | Access.A)
+    entity_type = db.Column(db.Enum(Entity), default=Entity.UNKNOWN)
 
     # Relationships
     access_groups = db.relationship(
diff --git a/app/models/permission/section_access_groups.py b/app/models/permission/section_access_groups.py
new file mode 100644
index 0000000..433c864
--- /dev/null
+++ b/app/models/permission/section_access_groups.py
@@ -0,0 +1,13 @@
+from app import db
+from app.models.utils import BaseModel
+
+
+class SectionAccessGroups(BaseModel):
+    __tablename__ = "sections_access_groups"
+
+    # Foreign keys
+    section_id = db.Column(db.Integer, db.ForeignKey("sections.id"))
+    access_group_id = db.Column(db.Integer, db.ForeignKey("access_groups.id"))
+
+    def __repr__(self):
+        return f"<s:{self.section_id} to a_g:{self.access_group_id}"
diff --git a/app/models/section.py b/app/models/section.py
index 3b2d743..10f0670 100644
--- a/app/models/section.py
+++ b/app/models/section.py
@@ -26,6 +26,10 @@ class Section(BaseModel):
     interpretations = db.relationship(
         "Interpretation", viewonly=True, order_by="desc(Interpretation.id)"
     )
+    access_groups = db.relationship(
+        "AccessGroup",
+        secondary="sections_access_groups",
+    )  # access_groups related to current entity
 
     @property
     def path(self):
diff --git a/app/static/css/styles.css b/app/static/css/styles.css
index 3e01c99..193d540 100644
--- a/app/static/css/styles.css
+++ b/app/static/css/styles.css
@@ -1137,10 +1137,6 @@ input:checked + .toggle-bg {
   top: 2.5rem;
 }
 
-.top-3 {
-  top: 0.75rem;
-}
-
 .top-32 {
   top: 8rem;
 }
@@ -1149,8 +1145,8 @@ input:checked + .toggle-bg {
   top: 11rem;
 }
 
-.-z-10 {
-  z-index: -10;
+.top-3 {
+  top: 0.75rem;
 }
 
 .z-0 {
@@ -1189,6 +1185,10 @@ input:checked + .toggle-bg {
   z-index: 55;
 }
 
+.-z-10 {
+  z-index: -10;
+}
+
 .col-span-6 {
   grid-column: span 6 / span 6;
 }
@@ -1438,6 +1438,10 @@ input:checked + .toggle-bg {
   height: 1rem;
 }
 
+.h-40 {
+  height: 10rem;
+}
+
 .h-5 {
   height: 1.25rem;
 }
@@ -1446,18 +1450,10 @@ input:checked + .toggle-bg {
   height: 1.5rem;
 }
 
-.h-64 {
-  height: 16rem;
-}
-
 .h-8 {
   height: 2rem;
 }
 
-.h-80 {
-  height: 20rem;
-}
-
 .h-9 {
   height: 2.25rem;
 }
@@ -1483,6 +1479,14 @@ input:checked + .toggle-bg {
   height: 100vh;
 }
 
+.h-64 {
+  height: 16rem;
+}
+
+.h-80 {
+  height: 20rem;
+}
+
 .max-h-40 {
   max-height: 10rem;
 }
@@ -1591,14 +1595,6 @@ input:checked + .toggle-bg {
   max-width: 72rem;
 }
 
-.max-w-\[230\] {
-  max-width: 230;
-}
-
-.max-w-\[280\] {
-  max-width: 280;
-}
-
 .max-w-full {
   max-width: 100%;
 }
@@ -1607,6 +1603,14 @@ input:checked + .toggle-bg {
   max-width: 20rem;
 }
 
+.max-w-\[230\] {
+  max-width: 230;
+}
+
+.max-w-\[280\] {
+  max-width: 280;
+}
+
 .flex-1 {
   flex: 1 1 0%;
 }
@@ -1632,11 +1636,6 @@ input:checked + .toggle-bg {
   transform: translate(var(--tw-translate-x), var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y));
 }
 
-.-translate-y-6 {
-  --tw-translate-y: -1.5rem;
-  transform: translate(var(--tw-translate-x), var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y));
-}
-
 .-translate-y-full {
   --tw-translate-y: -100%;
   transform: translate(var(--tw-translate-x), var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y));
@@ -1662,6 +1661,11 @@ input:checked + .toggle-bg {
   transform: translate(var(--tw-translate-x), var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y));
 }
 
+.-translate-y-6 {
+  --tw-translate-y: -1.5rem;
+  transform: translate(var(--tw-translate-x), var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y));
+}
+
 .rotate-180 {
   --tw-rotate: 180deg;
   transform: translate(var(--tw-translate-x), var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y));
@@ -1773,6 +1777,10 @@ input:checked + .toggle-bg {
   justify-content: space-between;
 }
 
+.gap-1 {
+  gap: 0.25rem;
+}
+
 .gap-2 {
   gap: 0.5rem;
 }
@@ -1841,12 +1849,6 @@ input:checked + .toggle-bg {
   margin-bottom: calc(2rem * var(--tw-space-y-reverse));
 }
 
-.space-x-4 > :not([hidden]) ~ :not([hidden]) {
-  --tw-space-x-reverse: 0;
-  margin-right: calc(1rem * var(--tw-space-x-reverse));
-  margin-left: calc(1rem * calc(1 - var(--tw-space-x-reverse)));
-}
-
 .divide-y > :not([hidden]) ~ :not([hidden]) {
   --tw-divide-y-reverse: 0;
   border-top-width: calc(1px * calc(1 - var(--tw-divide-y-reverse)));
@@ -2119,6 +2121,11 @@ input:checked + .toggle-bg {
   background-color: rgb(200 30 30 / var(--tw-bg-opacity));
 }
 
+.bg-sky-300 {
+  --tw-bg-opacity: 1;
+  background-color: rgb(125 211 252 / var(--tw-bg-opacity));
+}
+
 .bg-slate-300 {
   --tw-bg-opacity: 1;
   background-color: rgb(203 213 225 / var(--tw-bg-opacity));
@@ -2185,6 +2192,10 @@ input:checked + .toggle-bg {
   stroke: #F05252;
 }
 
+.\!p-0 {
+  padding: 0px !important;
+}
+
 .p-0 {
   padding: 0px;
 }
@@ -2226,11 +2237,6 @@ input:checked + .toggle-bg {
   padding-right: 0px !important;
 }
 
-.px-0 {
-  padding-left: 0px;
-  padding-right: 0px;
-}
-
 .px-2 {
   padding-left: 0.5rem;
   padding-right: 0.5rem;
@@ -2286,6 +2292,11 @@ input:checked + .toggle-bg {
   padding-bottom: 1rem;
 }
 
+.px-0 {
+  padding-left: 0px;
+  padding-right: 0px;
+}
+
 .pb-3 {
   padding-bottom: 0.75rem;
 }
@@ -2466,6 +2477,11 @@ input:checked + .toggle-bg {
   color: rgb(14 159 110 / var(--tw-text-opacity));
 }
 
+.text-orange-500 {
+  --tw-text-opacity: 1;
+  color: rgb(255 90 31 / var(--tw-text-opacity));
+}
+
 .text-red-500 {
   --tw-text-opacity: 1;
   color: rgb(240 82 82 / var(--tw-text-opacity));
@@ -2489,6 +2505,10 @@ input:checked + .toggle-bg {
   text-decoration-line: line-through;
 }
 
+.\!no-underline {
+  text-decoration-line: none !important;
+}
+
 .opacity-0 {
   opacity: 0;
 }
@@ -2626,6 +2646,11 @@ input:checked + .toggle-bg {
   background-color: rgb(155 28 28 / var(--tw-bg-opacity));
 }
 
+.hover\:bg-sky-400:hover {
+  --tw-bg-opacity: 1;
+  background-color: rgb(56 189 248 / var(--tw-bg-opacity));
+}
+
 .hover\:bg-white:hover {
   --tw-bg-opacity: 1;
   background-color: rgb(255 255 255 / var(--tw-bg-opacity));
@@ -2680,12 +2705,6 @@ input:checked + .toggle-bg {
   outline-offset: 2px;
 }
 
-.focus\:ring-0:focus {
-  --tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
-  --tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(0px + var(--tw-ring-offset-width)) var(--tw-ring-color);
-  box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow, 0 0 #0000);
-}
-
 .focus\:ring-2:focus {
   --tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
   --tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(2px + var(--tw-ring-offset-width)) var(--tw-ring-color);
@@ -2698,6 +2717,12 @@ input:checked + .toggle-bg {
   box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow, 0 0 #0000);
 }
 
+.focus\:ring-0:focus {
+  --tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
+  --tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(0px + var(--tw-ring-offset-width)) var(--tw-ring-color);
+  box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow, 0 0 #0000);
+}
+
 .focus\:ring-blue-100:focus {
   --tw-ring-opacity: 1;
   --tw-ring-color: rgb(225 239 254 / var(--tw-ring-opacity));
diff --git a/tests/test_get_or_create_permission.py b/tests/test_get_or_create_permission.py
index 82981ff..e092ea1 100644
--- a/tests/test_get_or_create_permission.py
+++ b/tests/test_get_or_create_permission.py
@@ -4,27 +4,29 @@ from app.controllers.get_or_create_permission import get_or_create_permission
 
 def test_get_or_create_permission(client):
     access = m.Permission.Access
-    entity = m.Permission.Entity
+    entity_type = m.Permission.Entity
 
     book_u: m.Permission = m.Permission.query.filter_by(
-        access=access.U, entity=entity.BOOK
+        access=access.U, entity_type=entity_type.BOOK
     ).first()
     assert not book_u
 
     assert not m.Permission.query.count()
 
-    book_u: m.Permission = get_or_create_permission(access=access.U, entity=entity.BOOK)
+    book_u: m.Permission = get_or_create_permission(
+        access=access.U, entity_type=entity_type.BOOK
+    )
     assert book_u
     assert book_u.access == access.U
-    assert book_u.entity == entity.BOOK
+    assert book_u.entity_type == entity_type.BOOK
     assert m.Permission.query.count() == 1
 
     book_u: m.Permission = m.Permission.query.filter_by(
-        access=access.U, entity=entity.BOOK
+        access=access.U, entity_type=entity_type.BOOK
     ).first()
     assert book_u
     assert book_u.access == access.U
-    assert book_u.entity == entity.BOOK
+    assert book_u.entity_type == entity_type.BOOK
 
-    get_or_create_permission(access=access.U, entity=entity.BOOK)
+    get_or_create_permission(access=access.U, entity_type=entity_type.BOOK)
     assert m.Permission.query.count() == 1
diff --git a/tests/test_init_access_groups.py b/tests/test_init_access_groups.py
new file mode 100644
index 0000000..bd166ed
--- /dev/null
+++ b/tests/test_init_access_groups.py
@@ -0,0 +1,31 @@
+from app.controllers.init_access_groups import create_moderator_group
+from app import models as m
+
+
+def test_init_moderator_group(client):
+    create_moderator_group()
+
+    group: m.AccessGroup = m.AccessGroup.query.filter_by(name="moderator").first()
+    assert group
+    assert not group.users
+    assert group.permissions
+
+    permissions = group.permissions
+
+    access = m.Permission.Access
+
+    interpretation_DA: m.Permission = m.Permission.query.filter_by(
+        access=access.D | access.A, entity_type=m.Permission.Entity.INTERPRETATION
+    ).first()
+    assert interpretation_DA
+    assert interpretation_DA in permissions
+
+    comment_DA: m.Permission = m.Permission.query.filter_by(
+        access=access.D | access.A, entity_type=m.Permission.Entity.COMMENT
+    ).first()
+    assert comment_DA
+    assert comment_DA in permissions
+
+    create_moderator_group()
+    groups: list[m.AccessGroup] = m.AccessGroup.query.filter_by(name="moderator").all()
+    assert len(groups) == 2