I would like to force a template when someone creates a child page under a specific parent page, and I thought an Automation rule would be the easy way to go.
But I'm realizing there is no trigger for page started (live page started, yes, but not a regular page).

Is there something I could set up with an incoming webhook that might be a decent work around?
I am also realizing there is no native action to insert/apply a template. Any ideas about work arounds?