Is it possible to scroll with one finger using a modifier?

I'm looking for a way to scroll with one finger (e.g. my thumb) while holding down a modifier key (e.g. CMD).

In other words, treat one pointer on the trackpad as two.

Is this even possible?

Thanks.

duplicate of https://community.folivora.ai/t/emulate-two-finger-scroll-up-down-with-one-mouse-button-and-movement-of-mouse/4812