Different user roles per organisations

Question 

A customer wants to set the rights of a user to Printer in one organization and to Printer and Viewer in another. How can this be done?

Answer

The roles assigned to a user are blanket roles for all the organisations they are assigned to. At the moment it is not possible to assign different roles to a user within different organisations.

Selecting a user in Users & Devices shows global role settings at the bottom. Changes to the permissions are applied to all organizations. Using the Edit User button does not let individual roles be set either, since the Organisations drop-down is disabled when a user belongs to more than one organisation.