"send keyboard shortcut" and then set that as CMD and the - key
I tried this but nothing happens. BTT does recognize the mouse wheel up and down triggers but it just doesn't do anything. Not in browsers nor in the picture preview for example.
I do have a logitech mx master which seems to be difficult or something, but I don't get why it doesn't work even though better touch tool perfectly recognizes the mouse actions and knows what it should do with it. It just doesn't do it.