Can you customize Mackie Control faders?

Hi, I have a behringer x-touch that is my main MCP hardware. I just added an icon platform m and want to be able to assign those faders to specific things other than just track volume. Specifically, I want to assign one to control midi mod, others as specific sub mix faders, etc. I want to use the rest of the functions as they would normally be used. Do I have to create a custom generic controller for the platform m or can I set it up as a standard mackie control device and just customize the fader assignments?