Thanks.
The context is that how I can set up when playing live in different venues is dictated by what equipment they have. So for some I'll be going into the front of a house amp if it doesn't have an FX loop (using effects only), or others I'll be going into the FX return if it does have one (with an amp model), other others I might be going direct to PA. I have different presets for those different scenarios so ideally would want the levels saved to the presets so I don't have to change the global setting each time. Not like it's a major hassle to do it, it's just the sort of thing I forget to do then wonder why the sound is wrong!
That makes sense about the output block level parameters though. Are there set DB levels within those that would constitute line level vs instrument level or is it just a question of cranking it until it sounds loud enough?