How do I go about making a Proximity Prompt to drag NPC dead bodies?

I'm making a game where one of the main features is killing NPCs and then dragging their corpses. I already have the killing part down, but I want to make it so that a Proximity Prompt appears for the NPC when they're dead and then using the Proximity Prompt to drag the NPC along with some sort of trigger to let go of the NPC.

I also wonder if it's possible to make it so where the player drags the NPC by the NPC's foot or body part or if this is only possible via rope. I'm using R15 rigs if that helps and the NPCs become rag dolls when they die. I've been trying to find a tutorial to do this myself, but I cannot.

If anyone has any help they could give, they would be very helpful! Please let me know if there is any more information I could give to help with explaining what I'm trying to do here.