@Wolverinebass is much more adept at using this than I, but broadly speaking.......
when you select a ‘sound’ the parameters which the dials represent are set to give you a specific tone. When you turn the dial and you start dialling back the parameter the left number flashes, if you boost that parameter the right number flashes. The controls are interactive in how they effect the sound.
Easiest thing to do is to copy the patch into an empty slot and then play, you then never lose the factory preset (it’s absurdly easy to copy and paste the patch). That way you can tinker till you get exactly what you want.
Buzz affects low end break up, punch mid range and crunch top end, although they all interact and punch can be a bit more like presence and not just distortion. Drive increases the amount of power amp distortion.
Essentially, even if the start point is not to your flavour there is more than enough to reign it in.
The presets in the manual are not - “here is where the dials are at” it is “this is what this number patch represents SVT/Jazz/Metal/Hiwatt/Van Hallen etc. Now make it your own”
@dave_bass5 I am going to just say it once, just get it....! (But only if you want to put time into tinkering)
Its like a good relationship, the more time you put in, the more you get out of it