@Nicholas > Have you considered adding the fogger to the manual DMX controls? Here you can see I've simulated a confetti cannon:
When the button is clicked (or mapped hardware control pressed), these values will be transmitted to those DMX addresses.
@Henry > Many advanced functions (such as pixel mapping) are beyond the scope or expectation of use for rekordbox lighting. To take advantage of those kinds of functions, you can either use the manual controls (as above) to put the fixture into one of its patterns / automations, or you'll have to use a different lighting software for those features.