Let’s say, you want to convert your ordinary After Effect project to a Template one, so each time you double click it, it will open as an Untitled Project, and then when you hit the Save command you’ll be asked to name it. Very useful if you’re like me, using a Master Project that have the same folder structure (Video, Audio, Pre-Comps, Graphics etc.).
Well it’s very easy, just select your Master project then change the suffix to .aet instead of .aep.
That’s it! You’re all set. Don’t believe me, check it for yourself. But you must do it now