can I ask how the multi-crew restricted Class 1 works?
Sorry to be the party pooper here, but it's most unlikely to be as simple as is being suggested. To the best of my knowledge an initial Class 1 would never be issued bearing an OML restriction ( OML = Operational Multicrew Limitation). At the initial Class 1 you are either fit to be issued with it . . . . or you are not.
The purpose of the OML is to allow established Class 1 holders back to work while the resolution of their condition is being confirmed by nothing more than the passage of time.