There are a couple of ways to do this now, but they all feel like more work than they should be. As @Automated_House mentioned, there’s going to be a major redesign of the app this year, which may just bring what you want. So you might want to just wait and see.
If you really want this now, the two most common ways of doing it either with modes (huge set up work, but then the automation will run locally) Or with webcore ( but then it won’t run locally).
If you want to do it with modes, you basically have to create multiple sets of modes to handle every Calendar condition you may want.
So you would have
Home
Home holidays
Away
Away holidays
Etc.
Then you set up your holiday automations To only run during the holiday modes. And you set up some routine that will change from one mode to the other.
The mode method works, and it’s what we used to do before webcore existed, it’s just a lot of work To go back through all your automations and make sure each one is set up for the correct combination of modes.
Also, we used to be able to add new modes through the mobile app, but now you can only do it through the IDE.
So the mode method does work, And it has the advantage of only having to change one setting and being able to affect dozens of automations if you want. But it’s easy to miss a mode When you were setting up a new automation and then have automations running when you didn’t want them to.
So the capability exists now, it’s just more work than it should be. And the capability may well be coming with the new revision of the mobile app, we will just have to wait and see.