Unfortunately, at this time HyperLynx Analog does not support hetero devices. This exact use case (assigning a SPICE model to a 5 pin op-amp w/ 3-pin fracture) has come up before and has not yet been implemented. You can read the details in TechNote MG564345: Associating a single SPICE model with a multiple-symbol (hetero/fractured) part.
I encourage you to vote for Mentor Idea D7914 which covers this enhancement.