Where is the editor?

It's in the strategy building, when you do any changes to a play.

I'm ok with it, but the outcomes vary differently compared to friendly matches. I got a lot of fumbling even after I adjusted the settings. I think it needs some more time to see if any further improvement is required. I wouldn't take the outcomes of testing at face value for anyone that has tried it so far. But it does help see if the 'Routes' I draw out will work. Now only if my players could follow them, like my instant slant routes that the receivers just keep going straight.