As a manager, you can add, edit and delete custom permission groups by going to Management > Settings > Manage Permissions:

1. Click Management > Settings.
2. On the Settings page, click the Manage Permission Permissions tile.
   

To add a new custom permission group:

1. Click the Add new button.
2. Enter a name and description, tick the boxes for all necessary access permissions, then click the Save button

To edit a permission group:

1. Click the Edit button next to an existing group.
2. Make the necessary changes, then click the Save button.

To delete a custom permission group, click the Edit button next to the group, then click Delete.