There's a Jamba guide here that talks about using autofollow. Make sure your toons both agree on who is master in the Jamba Team section and then push your settings from master to slave. Under Jamba > Team > Follow, make sure Auto Follow after combat is checked. You can also set a delay if you like.

The Quest section in it also talks about setting up interact with target within the game. Ualaa also has a walkthrough here for setting it up in ISBoxer. If you're using the IWT key set up by ISBoxer's wizard, you may be seeing issues where ISBoxer is turning off the Click To Move part of the interact key. So you may want to build a different key or go into the generated key mapping and remove the part that turns Click to Move off. It should be a command that sends /console Autointeract 0 - that is what turns off the click to move action, preventing your toons from being able to run up to a mob when you interact.