You should NEVER have both copies of the database open at the same time, VERY BAD THINGS can happen

Open your Filemaker Application.

From the Filemaker Application File menu select Hosts: Show Hosts

Click the Add favorites button

Fill in the Host address with cabadev.mmm.com and the Hosts's name with "Caba DEV server" (without the quotes)

Click Save

Once this has been setup you can access the database by selecting show hosts

Then you select the Test Server from your lists of favorites,

At this point you should see the available database file CABA

You will need to use your original Filemaker username/password, not the microsoft login

You will get a warning about  this not being the LIVE server, click Yes please

You may also see a dialog like this asking to enter a name and password

CLICK CANCEL

There will be a purple bar going through the navigation bar, this indicates you are on the dev server!

You're now ready to go