Need ability to duplicate a Schedule (and Dusk/Dawn)

Would be fantastic to be able to duplicate an existing Schedule and/or Dusk/Dawn event so a person could easily have, as an example, an easy way to slightly tweak the duplicate without recreating everything.
For instance, creating a weekday Dusk/Dawn schedule that one could duplicate to quickly create a weekend variant.

That would be great. But since the feature, for me, has never worked, I’d rather that they fix the basic operation of it.