How to change default pawn in Third Person Template?

Hi Guys,

Does anyone know how to change the pawn spawning by default in a project started off from the Third Person Template?

I mean the pawn/character BP itself - not the skeletal mesh, or the animations, etc.

All the possibilities that I’ve tried this far - Project Settings/Maps and Modes, Game Mode BP, replacing Player Start - have failed.

Any ideas?

Thanks,
Joe