The Mackie Control provides six programmable user modes, which you can use for your own assignments. You can activate each of these modes by holding down the SHIFT button along with one of the Assignment buttons, as follows:
TRACK + SHIFT = User mode 1.
PAN/SURROUND + SHIFT = User mode 2.
EQ + SHIFT = User mode 3.
SEND + SHIFT = User mode 4.
PLUG-IN + SHIFT = User mode 5.
INSTRUMENT + SHIFT = User mode 6.
The Assignment displays shows the users modes as u1, u2, and so on.
Activate the user mode you want to use by holding down the SHIFT button and pressing one of the Assignment buttons, as listed above.
In Logic Pro, use the Learn process to create one or more assignments, as described in Assigning Controllers to Logic Pro Parameters.