Lock vertical scroll on touchpad/trackpad?

Hi, I'm evaluating BTT for a specific need. I work quite often in excel files with wide cells with lot of text in them and I scroll mostly vertical in order to read the text in the cells. I do this in on my MBA in a virtual Win11 machine and the scrolling is overall much smoother on touch/trackpad than with a traditional mouse with scroll wheel.

One thing though that I want to control better, is to be able to lock scrolling to only vertical, since the scroll movements on the pad is hard to do accurately vertical. I have tried to explore the workflow for setting up a config, but I'm a bit lost here. I see a press/hold of a button/combination of buttons while scrolling as an ideal solution. Thx in advance for input.