[TASK] Add new section Permissions Managment inside Getting Started docs

This commit adds the first index page for `Permissions Management` under the
`Getting Started` documentation section. Several upcoming patches will include
subsections for the permissions management documentation.

Documentation/Index.rst

@@ -89,6 +89,18 @@ installed.
 
             Learn how to create users and configure their backend privileges.
 
+   .. container:: col-md-6 pl-0 pr-3 py-3 m-0
+
+      .. container:: card px-0 h-100
+
+         .. rst-class:: card-header h3
+
+            .. rubric:: :ref:`Permissions Management <permissions-management>`
+
+         .. container:: card-body
+
+            Learn how to effectively structure and manage backend user groups and permissions.
+
    .. container:: col-md-6 pl-0 pr-3 py-3 m-0
 
       .. container:: card px-0 h-100
@@ -140,6 +152,7 @@ installed.
   Troubleshooting/Index
   Extensions/Index
   UserManagement/Index
+  PermissionsManagement/Index
   IntroductionPackage/Index
   NextSteps/Index
 

Documentation/PermissionsManagement/Index.rst

@@ -0,0 +1,105 @@
+.. include:: /Includes.rst.txt
+
+.. index:: backend, acl, permissions, user groups, user management
+
+.. _permissions-management:
+
+======================
+Permissions Management
+======================
+
+.. warning::
+
+   This chapter (and the following) cover modules that will only be available for backend users
+   with :ref:`"admin" <admin-user>` access privileges.
+
+Introduction
+============
+
+TYPO3 is known for its flexibility and the ability to be expanded. It's packed
+with lots of built-in features and can be easily customized to fit your needs.
+That's why it is equipped with an advanced way to manage who gets access
+to different parts of the system. This solution works well for both small
+and large projects, allowing for detailed setting of permissions for various
+user roles, each with different levels of access.
+
+The access options in the TYPO3 backend were split into multiple areas.
+They can be configured at the levels of users and groups. Access can be set up
+for specific modules and pages, database mounts, file storages, content elements,
+and even individual fields within content elements.
+
+It's crucial to emphasize the importance of a thorough initial setup for
+permissions management. Skipping this foundational step can introduce complex
+issues as your project expands. As time passes, managing access levels can turn
+into a challenging and time-consuming task. In extreme situations, you might find
+yourself needing to overhaul your permissions setup entirely. Moreover, improperly
+planned permissions could lead to a risky workaround: granting administrative
+privileges to users who shouldn't have them, though it may seem like a quick fix.
+This approach compromises security and deviates from best practices.
+
+.. note::
+
+    The intention behind the previous text isn't to make you worried about the complexity
+    of access management in TYPO3. Actually, it's just the opposite. We want to show you
+    that you're working with a great tool. It might seem a bit complicated at first,
+    but as you learn more about it, get comfortable using it, and follow some
+    well-established practices, you'll find it very effective and easy to use.
+
+We also recognize that each project is unique and may require a distinct setup
+for permissions. Therefore, please consider this document as a compilation
+of recommended practices and guidelines that could be beneficial in managing
+permissions within the TYPO3 backend. However, remember that these recommendations
+are adaptable and can be tailored to suit your specific requirements.
+
+What access options can be set within TYPO3?
+============================================
+
+Access options in TYPO3 are categorized into several distinct groups.
+For a more detailed exploration, you can refer to the :ref:`Access Control Options <t3coreapi:access-options>`
+documentation page. However, here's a quick overview to give you an idea
+of what to consider when configuring permissions in the backend.
+
+..  rst-class:: dl-parameters
+
+Access lists
+    **Modules** - A list of submodules accessible to a user
+
+    **Dashboard widgets** - A selection of dashboard widgets that a user can be permitted to use on the dashboard
+
+    **Tables for listing** - A list of tables that a user is permitted to view in the backend
+
+    **Tables for editing** - A list of tables that a user is permitted to edit in the backend
+
+    **Page types** -A list of page types that a user is allowed to use within the pages tree
+
+    **Excludefields** - A list of default-excluded fields (columns) within tables, requiring explicit access permission
+
+    **Explicitly allow/deny field values** - A list of options within select fields whose access is restricted and must be explicitly granted
+
+    **Languages** - Restricts access to content in selected languages only
+
+Mounts
+    **Database Mounts** - Specifies which parts of the pages tree are accessible to the user.
+
+    **File Mounts** - Specify accessible folders within storages for users
+
+    **Category Mounts** - Specify which sections of the system's categories tree are accessible to the user
+
+Page permissions
+    Grant access to individual pages based on user and group IDs.
+
+User TSConfig
+    A TypoScript-defined, flexible, and hierarchical configuration for "soft" permissions and backend customization for users or groups
+
+Visualizing this overview of Access Control Options will help in developing
+the naming convention for backend groups later on.
+
+.. note::
+    Different types of Access Control Options can be leveraged to establish
+    naming conventions for backend user groups.
+
+.. toctree::
+   :maxdepth: 5
+   :titlesonly:
+   :glob:
+