You must have a new front end for each new user, but with TS, all users are
working from ONE box. So, you don't even have to install ms-access on any of
the client/connecting machines (they don't need ms-access). However, on the
TS server,  each user gets a logon, and in their private space, they each
must get a copy of the front end....

Terminal Services is simply a "high end" version of remote desktop. Each
user that connects to the sever gets a "remote" desktop of their own. So,
think of TS as a multi-user version of remote desktop. Each user that
connects gets a whole new desktop, my documents etc, but what they are
viewing is actually on the ONE remote server.

So, you never have to install anything, not a front end, or even ms-access
on the client boxes, but on the "main" server box, each user does get a copy
of the front end (usually, this should be a mde).