users and groups

[Brian Astill]

I've examined "man adduser" "man adduser.conf" and the contents 
of /etc/adduser.conf /etc/group and /etc/passwd.
Unfortunately I still can't see how to do what I want to do.  
<sob>

A number of users are to use the same machine.  That isn't the 
problem.

I want to set up another home directory which all can read (and 
preferably few can write).  That directory might be owned by 
root, group allofus.  Seems to me I need to have all my users in 
group allofus as well as their personal group as part of the 
setup.  BUT there doesn't seem to be a way of putting a user in 
more than one group.
EXTRA_GROUPS in adduser.conf seems to be designed for access to 
various peripherals.  Maybe I'm missing something.

Advice would be welcome. 


-- 
Regards,
Brian