[Dovecot] shared folders in v1.2 with one uid per user

[Ezequiel Alfíe]

Hello everyone.

I'm new to dovecot and I'm setting up a server for one domain only. I
have not yet decided whether I will be using one uid per user or one
uid for all of them.

What are the steps for correctly setting up shared folders with acls
if I choose one uid per user?

What advantages or disadvantages has setting one uid for all users vs
one uid per user, considering I wish to setup shared folders
(including security, performance, etc) ?

Thanks in advance,

Ezequiel