Associate perspective to user group

Hi everyone,

I'm approaching Tiki and I'm trying to setup an environment that suits 
my needs.

I've understood how to use categories and perspectives together, but I 
can't get how to assign a given perspective to a group of users, so that 
when an user belonging to that group log-in, the selected perspective is 
activated for that user and e.g. he lands on the perspective's homepage 
and so on.

I've seen this question has already been asked here 
https://tiki.org/tiki-view_forum_thread.php?threadId=46021 and here 
https://tiki.org/tiki-view_forum_thread.php?threadId=53891 but no answer 
was given, so I've posted here.

Thank you very much in advance.

Alessandro Martinelli