How do I unmask a user and how to make it possible for them to list tables?

Hi! I'm testing the anonymizer and got it working / the columns I specify are anonymized for a user I created and masked.

I can't figure these two things:

1. How to unmask a user who has been masked
2. How to let a masked user see the list of tables and the schema. For example when I run "\dt" with the masked user it doesn't show any tables.

Thanks a lot in advance for your help!