Thank you for the "vertical" option I didn't see: I guessed it was a "right-click" thing but I was trying to clic on the fader instead of the button...
Regarding the design of the fader OK, I understand, but since it's placed in a different place anyway don't you think it could be a little more like a "real" fader ?
Besides, on my small laptop (1366 x 768 resolution), if I choose 8 boards and 6 buttons on one board, even the (vertical) fader can't be used: the knob (and value) isn't displayed anymore. A maximum of 5 is allowed. Not a lot...