I've been trying to setup "Terminals" for different sprinkler head types on a FlameGaurd CPVC system. It seems I can only get the terminals to populate if the Sprinkler head used for the terminal is the same size as the drop pipe serving it. 

For example a 3/4" MIP head with a 3/4" drop populates a 3/4"x1/2" head adapter with a 3/4" MIP head (Which is wrong)

The head is almost always a smaller size then the drop. For example I need a 3/4" drop with a 3/4"x1/2" head adapter to populate along with a 1/2" MIP head.

I have the terminals setup in the service with these button codes assigned for "at terminal" and "after terminal", but as I stated, I cannot get them to populate properly unless the drop pipe size matches the head size (which in reality is pretty much never).

Any help would be appreciated. Thanks,