[Dovecot] quotas on shared folders

Hi,

After using dovecot 0.99.14 on a production server with full satisfaction, I'm now giving a try to 1.0beta8 (I know beta9 is out, but it's not yet available within Debian). The new features are great. Maildir++ quotas seem to work fine, and shared folders look promising (despite a few issues).

My problem is that I could not fire out how to set quotas on shared folders. Is it possible?

Cheers,

Nicolas