Hi
When I setup songs on the Wersi Abacus (All OAS instruments operate the same) I normally use the Quick load feature on the main screen, and then just load in what instruments I need to the appropriate layer, and also any styles I need, (You can assign up to 9 voices per layer (3 right hand, 2 left hand, 1 pedal) and also up to 9 styles. these can be styles, real drums, midi etc, or a mixture ) I then setup any settings I need (Footswitches, etc) and then store all the information in a preset with the name of the song, that way the amount of presets you need to use during a song is minimal. (Most can be done with just 1 or 2 presets) It also means I don’t have to remember were the sound that I want is.
BTW. On the Wersi when you select a sound/style group button on the panel, 9 voices/styles appear on the touch screen, as well as all the levels. (I.e. you do not have to scroll through the levels; you can just select them directly onscreen)

Bill