The User Rights (Permissions) that a User has been that is assigned for the Add-On will be the same as those assigned for the dRofus Client Programdesktop application.
As an example, if a User has Example: "Read Only" Rights assigned for Rooms in dRofus Client, the same User will desktop application will the user only be able to write information to Revit Add-On from dRofus Client . The user will and not have permission to write information to dRofus Client desktop application from Revit Add-On.
In Project Administrator Rights in dRofus is require, in order to be able to create new configurations, copy / rename / edit / delete existing configurations within the "Attribute configurations", as well as make changes within "Options", the User will require Project Administrator Rights in dRofus.