Start the database via a shortcut of the following form:
(all on one line)
"full path to MSACCESS.EXE"
"full path to database file"
/wrkgrp "full path to workgroup file"
As for belonging to more than one workgroup, you need to understand the
importance of the Personal Identifier (PID) that you choose when you
create a new user. Say you create two users with the exact same name,
in two different workgroup files. If you give those users the same PID,
they will be considered, by Access, to be a single individual; ie. "the
same person". But if you give them /different/ PIDs, Access will
consider them to be two different people.
That is how you distinguish these cases:
* several workgroup files have user "Tom", and all those Toms are the
same person; but,
* they also have several "Jane"s, and all those Janes are /different/
people.
HTH,
TC