I have an Edirol PCR 500 controller. It has 8 knobs and 8 sliders (basics) Under each knob are 2 small PADs (16 in total that would normally be used as drum pads). What I want to do is to be able to use the pads to switch the functionality of the knob just above each pair of pads. 1. default - Knob is used to control PAN 2. selecting a button below it, changes the knob from PAN to ... WET effect control. 3.selecting a button below it,l changes the PAN to DRY effect control... or anything similar control that might be adjusted by knobs. I'm new to all this and am lost in knowing MIDI assignments. ANY help?

Hi Knoteye, You can set the knobs to control Pan in the Controller Assignments window. Logic Pro > Preferences > Control Surfaces > Controller Assignments... Check out pages 41-43 of the Logic Pro 8 Control Surface Support Manual. That details the info about Zones and modes that will help you set this up close to what you want. I don't have a similar style Controller to try this out on :( Let us know how you get on. Cheers Rounik