To access the concelebration, you must be registered on the site.
Each priest must register individually. Registrations of multiple priests with a single account are not foreseen.
Registrations will begin only after the official publication of the Calendar of celebrations presided over by the Holy Father.
Lay faithful, including those accompanying priests, must book tickets at the
Prefecture of the Pontifical Household.
The administrator, after checking your celebret, will activate your account and you will then be able to access it by entering the credentials with which you registered.