After selecting the placement references you can select the PEM nut in the Screw Fastener Definition Dialog.
Click OK to assemble the nut.
Assemble nut to subassembly
If the second reference surface is inside a subassembly, then you can assemble the PEM nut directly to this assembly. In the example, the placement surface for the “Nut/Thread” is inside the SL3_PLATE_INCH.PRT. This part is inside SUBASM.ASM
Now you can check Assemble in subasm.asm to assemble the nut to SUBASM.ASM.