replacing serpentine belt

I started to replace the drive belt on my 96 Park Ave today, I realize that the right side top engine mount must be losened or removed first. Any tricks I should know that might help? What part needs to come loose? The rubber isolater or the 3 point cast bracket that holds the mount.
Thanks Mike

You can do it without removing the engine mount or the bracket.

Look under the front of the mount underside you will see a 18mm nut remove the nut. Next remove the stud. Grab a prybar pry the mount and the spacer for the bolt will fall out. Then you can replace the belt.