@bkennedy74 If a song you’re going to play already has a capo, you can move it down to either change key or stay in the same key for an altered guitar part using different chord shapes.
Are you wanting to change key?
If yes, it is the simplest case of move the capo down until you find a position that suits your voice.
If staying in the same key or exploring other capo use, check this topic for more.