When it comes to moving lights around on the stage, there is a longstanding rule that has existed almost as long as moving lights themselves. If you are not already following this rule, then read carefully as it will certainly help you in your positioning. When moving an automated luminaire, it is best to always adjust tilt first. Just remember: Tilt First to ensure the best focusing possible. By tilting the fixture first, you will easily see where it is pointed and then can pan to the desired location. Panning first could result in the unit spinning in circles, or arcing to a position more upstage than desired. If you get lost in panning, then you are more likely to create accidental flipping of the fixtures as they move from one position to another during your show.
-Brad Schiller, from “Feeding the Machines,” PLSN Aug. 2018 page 65