Setting up shared folders for IMAP

[Ramzes7791]

Hello,

We run Currier under CPanel 11.18.3-RELEASE 21703, and have access to WebHost Manager and VPS (Virtuozzo)

Recently we have started to use IMAP for some of the accounts, and I have no clue as to how to set it up properly. Right now, several people just use the same account info, so if it's marked read it's marked like that for all.

I would like to do this folder (with a lot of subfolders) to be accessible under their login, so, from what I understood there are several ways to do it, but can not find Guide informative enough for me...
So, the only indication I found:

Link the mail directory to main account
root@rhel4-64release [/home/cptestin/mail]# ls -al | grep cptesting_com
lrwxrwxrwx 1 cptestin cptestin 21 May 2 13:50
.testito\@cptesting_com -> cptesting.com/testito/

and there's also more complex way in the same document, but it seems to be presentation, without any details, I was wondering if anyone would be willing to help me out or send a link to some guide online.

Thanks a lot!