Elite Convergence Protocol with tilting rear servo

I’m wondering if anyone has used the Elite Convergence model but added a tilting rear servo for yaw control.
If not, how hard would it to add the feature to the current protocol.
I’m guessing that it might be possible to pull the commands from a tricopter model and add it to the Convergence commands.
Sorry, I’m new to all of this and not to familiar with programing/coding (not even sure that is the correct terminology).
Thanks for any help.