Anyway to use Mousewheel for skills/other commands?

Title, I turned off mousewheel to zoom but still can't select it on skills. I tried an ahk (not sure if legal) but it just bugs and a single scroll keeps pressing the key forever and after a while the script just stops working. It works fine everywhere else.

My left hand is injured and I would like to be able to play with mostly just mouse. I'm looking into buying a mouse with extra buttons but that will take a few days