Duplicating Signs

First, select your sign (or signs) and open up the sign menu, found in the top-right corner of the sign interface

Arrow pointing at the sign menu in SignAgent.

Next, select the "Clone" option to make an exact copy of the sign (or signs) you have selected.

Clone option circled in red.

Note that after duplicating a sign, you'll probably want to change the sign number so that you don't have two signs with the exact same information