SSMA (Access - SQL 2012) newbie question about new tables

I have successfully run SSMA and moved the back end tables of an Access project to SQL Express 2012.

Some questions:

- if I add a new table to the SQL backend, how do I get it to appear in the Access project?

- if I want to move the whole thing to another computer, how do I go about it?

- do I always have to have the SSMA app installed?

- I can't see an ODBC datasource on the machine

Thanks for some help

CarolChi