Save a life: Numpad 0 selects the nearest target, prioritizing NPCs, and also interacts with selected character

so if say there are 800 PCs around the Bozjan warp NPC

you can just hit numpad 0 twice

and you're in

Alternatively, X will hide PC names, so you can select the NPC's name without interference.

I use that one for the Summoning Bell or quest objectives a lot.