Automation tiles instead of Scene tiles?

I'm rearranging my scenes & automations in SmartThings. Right now my ActionTiles panel refers to a single scene (called "Bedtime") that turns some lights off, locks the doors, and starts a countdown (using power allowance on a virtual switch) to turn on the interior cameras and turn off the last light.

I am planning on splitting that scene into several individual scenes - lights off, lock doors, cameras on, because that just make sense (to me anyway) as the individual scenes can be used for purposes other than bedtime.

The problem is, a SmartThings scene cannot call another scene (so I can't have a master scene that calls the 3 individual scenes).

I can, however, use a SmartThings automation (I have one already, it runs at 10pm if I forget to run it; I would modify it to call the individual scenes rather than the single Bedtime scene).

BUT - it appears that ActionTiles won't let me call an automation - is that by design?

Thanks.