Last campaign I GMed, one of my players told me in advanced that they had a spell that required a cone template. I went ahead and made a translucent PNG template and uploaded it into my art library. When it came time for the spell to go off, I brought the template in on the token layer. For player control AOE, just get a heads up from your players of what templates you'll need to prepare beforehand and stash them away on a Page with permissions assigned to all players. When you need them, just copy and paste them to whatever Page your players are currently on. Token properties carry over when you copy and paste.
