How to change spacing between main page and sidebar?

I would like to know how to change spacing between main page and sidebar AltaCv template.

I tried this as indicated in overleaf page changing marginparsep parameter:

RequirePackage[margin=2cm,marginparsep=8]{geometry}

geometry{left=1cm,right=9cm,marginparwidth=7cm,marginparsep=.5cm,top=1.25cm,bottom=1.25cm,footskip=2baselineskip}