If Then Else is by definition a single condition with two decisional paths, one for true, one for false. You clearly need two conditions (motion and projector). You can do that in CoRE by enabling expert mode and using a THEN IF grouping method (add a condition group and two conditions in it, then click on the AND between them and change it into a THEN IF) and use when true/when false individual actions on the second conditions.
Or… you could skip CoRE and dive into webCoRE (which is bound to replace CoRE once it’s out of beta). More info here: [DEPRECATED THREAD] webCoRE Beta Milestone 1
If you install webCoRE, you can even import this piston below (add new piston and use the orange option) and just select your motion sensor, your projector switch, and your bulb…
