To control plugins in you need to put the BCF into "plugin mode". To do this do the following
(When I'm referring to buttons here I am always referring to the block of buttons on the right hand side unless I state otherwise.) 1. Press and hold the shift 1 key (top left) and then press the track/plugin button (3rd down on right) twice. The LED should change to P1 and then P1. (<-Note the period on second press) The first mode is multi-track mode where each pan pot controls the same selected control on each track, the second mode with the "." gives you full control over the currently selected plugin on the currently selected track. Note that P1 always refers to the track EQ.
2. To move to the next plugin (P2) on the currently selected track make sure that you actually have another plugin on the current track

and that the "Edit" light lights by pressing "shift 1" and the "M1" key (2nd down right hand side) together. Note: If in edit mode the light will toggle on and off as you press and release "shift 1". Release all
3. Press the M1 key (unshifted) and hold, then "shift 1" and hold, and then the right bank select button (5th down right hand side) The LED should then change to P2. and you have control over the first plugin. (Controls are assigned to the pan pots by default but you can flip them with the faders by pressing "Shift 2" (2nd down left hand side) and "M1" - they cycle through the following sequence:- pan pots only -> pan pots and faders duplicate -> pan pots and faders swap -> pan pots only)
4. To move through the plugin controls a bank at a time make sure the edit key is still lighting (press shift 1 to check - see above on how to turn on/off) and then press the bank right/left keys. While in edit mode the bank keys will control the current pan pot assignment NOT move tracks a bank at a time.
I hope this gets you going. It all looks and sounds far more complicated than it is. It soons become second nature once you've learnt all of the various key presses. Apart from a handful of functions related to not having a jog wheel there is nothing this unit won't do that the Mackie will (just a little more long winded) all you have to do is read the Mackie control surface help file for loads of info and key presses. I find it easiest to think of the BCF being in different "modes" - Track mode, plugin mode, EQ mode, Send Mode, Pan mode, etc. etc and then most of the controlls relate to that particular mode (but maybe that's just my crazy way of working -

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You really need to use the unit in conjunction with the virtual LED, without it I would imagine it a bit of a nightmare to "see" where you are. Unfortunately I am led to believe it doesn't work on Vista or 7. One of the reasons this old luddite is still clonking on with XP.