How do I simulate hetero devices?

I am trying to simulate two parts of a heterogeneous device such as a dual op amp. My 1st symbol (OPAMP_Dual_A.1) contains power pins but my second symbol (OPAMP_Dual_B.1) does not. What do I have to do to simulate them both on the same schematic? The problem is attaching the model (which has 5 model pins) to the symbol which does not have the power pins. I think I have to use the SIGNAL property but nothing seems to work. The model refuses to map the symbol pins to the model pins because the symbol power pins are not there.