No guide yet - should be straightforward though. Add a texture into the input, set the mode (to vary by Instance, Primitive etc. - this is the same as the MultiMap), then set your adjustments as a min and max for U, V offset, rotation, and scale. Then for example each instance will have the position, rotation and scale adjusted to lie between the min and max values set for each, giving each instance a different look (if set to instance mode of course :) )