On the VM3100Pro mixer, hit F1 while holding Shift, then press Yes to load Logic setup.

In LogicRPC, Open the VM3100Pro Template and Save As autoload. This will open up the mixer's template every time Logic is opened.

To operate the faders in Logic from the mixer, select Midi CH on the mixer, and faders 1-8 will work. Use the Logic on-screen buttons to select the other banks.

The default assignment is to assign track 1 to output 1, track 2 to output 2, track 3 to output 3, and so on. In this configuration, you must turn up all audio channels (on the mixer) 13-20 you wish to use as outputs. You may wish to assign all audio tracks to outputs 1-2 so you'll only have to turn up channels 13 and 14. This will not affect the fader controls.