Assigning a circuit(Schematic) to IC in PIPRO, ADS

Hello,

I am trying to do Power integrity analysis using PIPRO, Keysight ADS software. I have imported a layout in PIPRO setup.

For PI_AC analysis, I want to assign a schematic as a component model to an IC (Packaged chip) for analysis.

How can I create a component model of a schematic for use in PIPRO? I have tried creating a symbol but PIPRO does not take a symbol as a component.