If you just have two toons, go back to your old macros before you installed Jamba/MultiTool. So leave your old follow / assist macros as they were.

In Jamba, make sure you have both toons in your team list (type /jamba). Set your main as the master in Jamba. Make sure that both toons have the same team list.

You should now be able to use Jamba for Taxi / Quest sharing and the combat / follow will work the way it did before; no need to put additional commands in your macros.