Additional FX slots on a program?

Probably a newby question: I have 4 FX on my program and another 4 in the submix I'm sending it to. What's the best way to open to open up more FX slots just for this one program.

At the end of the chain and without steming the tracks out to a daw

Lampdog wrote:Pad efx
program efx
Sub efx
send/return efx
Master efx

Is it possible to train a program -> sub -> return?