Defining Access permissions to the subdomain in the Syncope as a group?

[Ravindra Singareddy]

Hi All,
I have a subdomain (or a url), which is created by the user, and he/she wants 
to give permission to other user to view. Whether, I can create a group(same 
name as subdomain or url) in syncope and assign users, who can access it?
Thanks

Ravi