In order to avoid having to assign the signature roles of all the processing services to the secretary users of the entity, the manager of EACAT can select the option You can edit and sign them all in the Personalization section of the file of user data.
This will automatically make the user have the signature permission for all existing and subsequently added AAPP Procedures processing services.
For the services of Via Oberta and those included in the Applications section of EACAT, the Interoperability Manager or the user manager must add the permission for each of the services.
You have explained it extensively in this content: Assigning all roles at once to a user