Group automations

Is it possible to group automations? I have several plugs and I want them all to be on the same automation. I have several Christmas trees in different rooms and so far I have had to do an automation for each one.
Also, I tried to do an automation rule overnight. It allowed me to program tow automations until 11:59 pm and from 12:00 am, but when I tried to have it turn on at 10:00 pm and turn off at 5:00 am the next morning, it wouldn’t let me.

Yes. The first step is to put the plugs in a group together. This is how to do that.

Then, when you make a new schedule rule, you can scroll to the bottom of the list and the plug group should show up as something you can control.