mono bass

hi,if I record a bass line from,say,predator,how do I make it mono.
in all tutorials for dance it says have your kick and bass in the centre.
when I import a kick as audio,i create a mono audio track,so that’s ok yes?
but the bass on an instrument track how do I centre that?

but the bass on an instrument track how do I centre that?

By using the stereo dual panner mode…

Lots of times it is centre by default, when in doubt just export the track as wav with the mono box checked