If it’s a starting point fx will give you the adjustments needed after you provide your desired velocity and pellet/slug weight.
With there being something like 5 different adjustment points I’m not surprised it’s overly difficult to figure out. I was fairly close to buying an impact myself but I’d need a compressor and decided to go with a tx200 instead
I’m going to guess you’re going to have a hard time finding someone local with one on this platform, there’s only a few who actively have airguns here. You may be better off asking on the Canadian airgun forum