It?s pretty simple. If you can assign a parameter in the specific LFO you can surely use the mod-matrix too. The only difference here is that you get to choose the source (where the source in the LFO-menus are...of course...the LFO?s). Here a quick guide:
- Press the LFO select button until MOD is lit.
- Press select (the other select

) and choose witch slot to use (assign 1, 4, 5 & 6 has one destination each, assign 2 has two destinations and assing 3 has three destinations)
- Choose the source for modulating (modwheel, LFO, envelope, etc.)
- Choose the destination parameter you want to manipulate (cutoff, attack, noise volume, osc shape, etc.)
- Dial in the desired amount of modulation you want the source to modulate the destination parameter with (just like with the LFO?s)
- Now you?r done
Read more about the MOD-matrix in the manual at page 48 and do yourself a favor and learn to use it and experiment with it. You can do so pretty cool (and wird) things in there.