DimPro - Mod Wheel for LFO

First of all, load any preset to get you started. You didn't specify, so I'll have to assume that you want a vibrato-type effect, with the depth gradually brought in by the mod wheel. Click on the PITCH button, then go to the LFO section in the lower-right.

Set the Status to On, the Freq to 5.50, and keep the Depth at 0.

To the left of the DIMENSIONPRO logo, you'll see four little icons. Press the 3rd one from the right to open up the MIDI Matrix window. There you'll see 16 rows of 'slots'; each one divided into four columns. In one of those 'slots', put in the following values:

Source: CC 1 (Mod Wheel) Destination: Pitch LFO 1 Depth: 50 Smooth: 0.0

Play a note, and bring up your mod wheel. Now you can go back, and adjust the Pitch LFO settings (or the values in the MIDI Matrix slot) to taste.