If you are logged in as Admin and are assigning plugin privileges for groups from the Toolbox, you may notice in some cases that some plugins may not be listed (In the image below, 4D Write Pro & 4D View Pro are not listed when logged in as Admin).
If there is a group with access to certain plugins, Aministrator must be a member of that group in order to view and edit privileges for those plugins in the Toolbox (4D Write Pro & 4D View Pro are now visible to Admin in Toolbox after adding Admin to group with access to those plugins).
If the plugin you want to edit access for is not listed, there may be a group with privilege to that plugin that the Administrator is not a part of. In this case, Administrator will need to be added to that group or Designer can be used instead (Designer can view/assign plugin privilege in Toolbox without needing to be in the plugin access group).
Note: Licence for plugin must also be installed in your 4D product to be listed