Making a Clothing NPC

I made an NPC, and I need to know how to incorporate PAC3 Models into the ENT:AcceptInput. I don’t know how I would go about setting the model when the player presses “E” on the NPC.

Search about net messages, vgui and SetSubMaterial

He said he wants to change the MODEL, not the material

I see all of these PAC3 Model Codes and such. But would I netMessage the function to Server-Side and do it there? I’m just confused how it is done is all. Any tutorial or video would help a lot!