Hello Antoni,
To add to Luc's reply:
Antoni Scott wrote:I am aware of the drop down menu for swell box volume, but none of the volume slide bars do anything. Obviously I am missing something, or something hasn't been set up properly.
Do you mean that the sliders are disabled (greyed-out, and don't move)?
If so, you must be looking at note numbers of pipes that aren't included in the selected rank, so you would need to scroll the window to the left or right to find the compass of the rank (which will have its sliders enabled).
Best regards, Martin.
Hauptwerk software designer/developer, Milan Digital Audio.