publish multiple calendars together in one link
I like how you can publish calendars and such, but I would like to see more options in terms of publishing a group of calendars together. My mom works two jobs, and wants to put in each job as a different calendar, but share her entire work schedule with her husband, not just one at a time.
This would be extremely helpful in combination with Glencora Borradaile's 2013 suggestion to share calendars as "private" (e.g. displaying only Free/Busy). I'd like to be able to share one public link that will show my entire availability, across all calendars, but only as Free/Busy.