diff --git a/docs/plugins/permissions.rst b/docs/plugins/permissions.rst
index 964608ee..47927a32 100644
--- a/docs/plugins/permissions.rst
+++ b/docs/plugins/permissions.rst
@@ -1,14 +1,295 @@
 Roles and permissions
 #####################
 
-.. vale off
+Mautic defines custom Role permissions through Permission objects.
+
+How permissions work
+********************
+
+Mautic calculates permissions based on bits assigned to a Plugin level and permission. Bits are integers that increase by doubling the value - 1, 2, 4, 8, 16, 32, 64, 128, 512, 1024, and so forth. Avoid assigning numbers in between, such as 3 or 5, because the permission won't calculate correctly.
+
+For example, if ``HelloWorldBundle`` manages access to a ``worlds`` entity, the permission set for ``plugin:helloWorld:worlds`` resembles this setup:
+
+.. list-table::
+   :widths: 50 50
+   :header-rows: 1
+
+   * - Permission
+     - Bit
+   * - view
+     - 1
+   * - edit
+     - 2
+   * - create
+     - 4
+   * - delete
+     - 8
+   * - full
+     - 16
+
+.. note::
+
+   The notation ``plugin:helloWorld:worlds:view`` typically requests permission in Mautic. This notation tells Mautic to verify the ``view`` permission for the Plugin ``HelloWorldBundle`` at the ``worlds`` level. Levels allow Plugins to set permissions for multiple areas.
+
+Mautic sums the bits for the permissions granted to a Role and stores the result in the database. For example, if a Role has ``view`` and ``edit`` access, the stored bit is 3. If given ``view`` and ``create`` access, the stored bit is 5.
+
+When permission verification is necessary - for instance ``plugin:helloWorld:worlds:create`` - Mautic verifies if the Role's generated bit for ``plugin:helloWorld:worlds`` includes bit 4. If so, Mautic grants permission.
 
 .. note::
 
-   The content for this page requires a major update. The legacy page contains outdated and potentially inaccurate information. You can still access it in the :xref:`legacy repository`.
+   The ``full`` permission grants access to all prior permissions and should always be the highest bit.
+
+Using permissions
+*****************
+
+.. code-block:: php
+
+   <?php
+
+   $security = $this->get('mautic.security');
+
+   // Check if user is granted a single permission
+   if ($security->isGranted('plugin:helloWorld:worlds:view')) {
+       // do something
+   }
+
+   // Check if user is granted multiple permissions (must be granted to all to be true)
+   if ($security->isGranted(
+       array(
+           'plugin:helloWorld:worlds:view',
+           'plugin:helloWorld:worlds:create',
+       )
+   )) {
+       // do something
+   }
+
+   // Check if user is granted to at least one permission
+   if ($security->isGranted(
+       array(
+           'plugin:helloWorld:worlds:view',
+           'plugin:helloWorld:worlds:edit',
+       ),
+       'MATCH_ONE'
+   )) {
+       // do something
+   }
+
+   // Get an array of user permissions
+   $permissions = $security->isGranted(
+       array(
+           'plugin:helloWorld:worlds:view',
+           'plugin:helloWorld:worlds:edit',
+       ),
+       'RETURN_ARRAY'
+   );
+
+   if ($permissions['plugin:helloWorld:worlds:view']) {
+       // do something
+   }
+
+   // Check if user has access to view leads
+   if ($security->isGranted('lead:leads:viewother')) {
+       // do something
+   }
+
+To determine if a User has a specific permission, use the Mautic security service, which you can obtain from the ``mautic.security`` service.
+
+Mautic uses specific notation to identify permissions:
+
+* **Core bundles**: use the format ``bundleName:permissionLevel:permission``.
+* **Plugins**: append the ``plugin:`` prefix. For example, ``plugin:bundleName:permissionLevel:permission``. Plugins require this prefix because it directs Mautic to search for the permission class within the ``plugins/`` directory and the ``MauticPlugin`` namespace.
+
+Core bundles or Plugins set the permission level and permissions. For example, the core UserBundle has ``users`` and ``roles`` levels with ``view``, ``edit``, ``create``, ``delete``, and ``full`` permissions for each. To verify if a User has permission to edit Roles, use:
+
+.. code-block:: php
+
+   $security->isGranted('user:roles:edit');
+
+Creating custom permissions
+***************************
+
+A Plugin creates its own set of permissions by defining a Permission class. Each permission class must extend ``Mautic\CoreBundle\Security\Permissions\AbstractPermissions``.
+
+.. code-block:: php
+
+   <?php
+   // plugins/HelloWorldBundle/Security/Permissions/HelloWorldPermissions.php
+
+   namespace MauticPlugin\HelloWorldBundle\Security\Permissions;
+
+   use Symfony\Component\Form\FormBuilderInterface;
+   use Mautic\CoreBundle\Security\Permissions\AbstractPermissions;
+
+   class HelloWorldPermissions extends AbstractPermissions
+   {
+       public function __construct($params)
+       {
+           parent::__construct($params);
+
+           $this->permissions = array(
+               'worlds' => array(
+                   'use_telescope' => 1,
+                   'send_probe'    => 2,
+                   'visit'         => 4,
+                   'full'          => 1024
+               )
+           );
+
+           // Add standard category permissions
+           $this->addStandardPermissions('categories');
+       }
+
+       public function buildForm(FormBuilderInterface &$builder, array $options, array $data)
+       {
+           // Add standard category form fields
+           $this->addStandardFormFields('helloWorld', 'categories', $builder, $data);
+
+           // Add custom 'worlds' level form fields
+           $builder->add(
+               'helloWorld:worlds',
+               'permissionlist',
+               array(
+                   'choices' => array(
+                       'use_telescope' => 'plugin.helloworld.permissions.use_telescope',
+                       'send_probe'    => 'plugin.helloworld.permissions.send_probe',
+                       'visit'         => 'plugin.helloworld.permissions.visit',
+                       'full'          => 'mautic.core.permissions.full',
+                   ),
+                   'label' => 'plugin.helloworld.permissions',
+                   'data'  => (!empty($data['worlds']) ? $data['worlds'] : array()),
+                   'bundle' => 'helloWorld',
+                   'level'  => 'worlds'
+               )
+           );
+       }
+
+       public function getName()
+       {
+           return 'helloWorld';
+       }
+   }
+
+Most permission classes require three methods: ``__construct()``, ``buildForm()``, and ``getName()``.
+
+``__construct()``
+=================
+
+The constructor performs two tasks. It calls ``parent::__construct($params)`` or sets ``$this->params = $params;``. It then defines the ``$this->permissions`` array. This array organizes permissions into levels, where each level contains specific permissions assigned to bits.
+
+For example, in the code sample, a custom level of ``worlds`` includes ``use_telescope``, ``send_probe``, ``visit``, and ``full``. To verify if a User has the ``send_probe`` permission for the ``worlds`` level, use:
+
+.. code-block:: php
+
+   $mauticSecurity->isGranted('plugin:helloWorld:worlds:send_probe');
+
+Mautic provides helper methods for common permission sets:
+
+.. list-table::
+   :widths: 30 70
+   :header-rows: 1
+
+   * - Method
+     - Description
+   * - ``addStandardPermissions()``
+     - Sets ``view``, ``edit``, ``create``, ``delete``, ``publish`` - with an option to exclude - and ``full`` permissions.
+   * - ``addExtendedPermissions()``
+     - Sets creator-level restrictions - ``viewown``, ``viewother``, ``editown``, ``editother``, ``create``, ``deleteown``, ``deleteother``, ``publishown``, ``publishother``, and ``full``.
+   * - ``addManagePermission()``
+     - Sets a single ``manage`` permission.
+
+``buildForm()``
+===============
+
+.. vale off
+
+The ``buildForm()`` method appends permission toggles to the Role's Form. See :doc:`/plugin_extensions/forms` for details on Form builders and review the comments in the code sample for implementation details.
+
+.. vale on
+
+Mautic provides complementary helper methods for common permission sets:
+
+.. list-table::
+   :widths: 30 70
+   :header-rows: 1
+
+   * - Method
+     - Description
+   * - ``addStandardFormFields()``
+     - Appends the standard permission sets to the Form.
+   * - ``addExtendedFormFields()``
+     - Appends the extended - creator restricted - permissions to the Form.
+   * - ``addManageFormFields()``
+     - Appends the single manager element to the Form.
+
+``getName()``
+=============
+
+This method is mandatory. The return value must match the ``bundleName`` and the filename. For example, if the bundle name is ``HelloWorldBundle``, this method returns ``helloWorld`` and the file is ``HelloWorldPermissions.php``.
+
+Permission aliases
+******************
+
+.. code-block:: php
+
+   <?php
+
+   protected function getSynonym($name, $level)
+   {
+       if ($name == 'send_satellite') {
+           $name = 'send_probe';
+       }
+
+       return array($name, $level);
+   }
+
+To add a permission alias, use the ``getSynonym()`` method. Mautic calls this method before determining each requested permission, giving an opportunity to change the permission level or name as needed.
+
+For example, ``parent::getSynonym()`` recognizes ``editown`` as ``edit`` if the ``$this->permissions`` property for that level doesn't define ``editown``.
+
+Manipulating permissions before saving
+**************************************
+
+.. code-block:: php
+
+   <?php
+
+   public function analyzePermissions(array &$permissions, $allPermissions, $isSecondRound = false)
+   {
+       foreach ($permissions as $level => &$perms) {
+           foreach ($perms as $perm) {
+               $include = array();
+               switch ($perm) {
+                   case 'send_probe':
+                       $include = array('use_telescope');
+                       break;
+                   case 'visit':
+                       $include = array('use_telescope', 'send_probe');
+                       break;
+               }
+               if (!empty($include)) {
+                   foreach ($include as $r) {
+                       list($ignore, $r) = $this->getSynonym($level, $r);
+                       if ($this->isSupported($level, $r) && !in_array($r, $perms)) {
+                           $perms[] = $r;
+                       }
+                   }
+               }
+           }
+       }
+       
+       return false; 
+   }
+
+Plugins can adjust permissions based on other selections to prevent User error. For example, if a User has ``edit`` permission, they also require ``view`` permission. Use the ``analyzePermissions()`` method to modify permissions before Mautic persists them to the database.
+
+To re-adjust permissions based on factors outside the Plugin's control, return ``true`` from ``analyzePermissions()``. This triggers a second round of analysis after all other bundles and Plugins finish their processing. During this round, the ``$isSecondRound`` argument is ``true``.
+
+Advanced ``isGranted()`` logic
+==============================
 
-   If you're interested in helping develop the new content for this page and others, consider joining the documentation efforts.
+Override the parent method - ``public function isGranted($userPermissions, $name, $level)`` - to run custom logic rather than simple bit comparisons. Use this to define unique behavior for the class's own levels and individual permissions.
 
-   Please read the :xref:`dev docs contributing guidelines` and :xref:`Contributing to Mautic’s documentation` to get started.
+Advanced ``isSupported()`` logic
+================================
 
-.. vale on
\ No newline at end of file
+The same rules apply to the ``isSupported()`` method. This method determines if a bundle or Plugin includes the requested permission and permission level. Use this to provide backward compatibility - BC - support.
\ No newline at end of file