Hi, I would like to add certain mouse keys to function Key Combination. How may I do so?

I currently, use the Logitech G502 Lightspeed. I have the mouse keys already set-up to suit my workflow. However, I wanted to be able to use a modifier (Ctrl) + a mouse keys (Scroll Right/Left) to activate a function.

Please advice how I may do so? I prefer not to remap my mouse keys if possible - as they have already been build to my workflow.

I aim to be able to active 2 of my most used functions with just my mouse. (I already have one of the mouse keys mapped to Ctrl from before and integrated into my workflow).

The mouse buttons I would like the function to map to are currently mapped to Scroll Right & Scroll Left.

Please advice, on how I may map a function Key combination to them?
Thanks.