I have a Jester ML24.
I am new to lighting (well DMX) and am slowly getting my head around this desk!
I have worked out how to assign a moving light fixture to one of the buttons (top right) but can't seem to be able to remove them or even overwrite them with a different lamp.
When I go back to assign it won't offer me that 'channel' anymore as there is already something assigned.
The only way I have found to remove them so far is to reset the desk to factory settings which is clearly a tad extreme!
I'm sure this is obvious and I will groan when I know how!