In my HA side bar, I have a page (http://homeassistant.local:8123/calendar) where I can create calendars and add events to them. Separately, I can create schedule helpers (http://homeassistant.local:8123/config/helpers). Calendars seem a lot more useful for recurring events; I can’t figure out how to make an even repeat on a schedule. However, schedules seem more helpful for automation; I have an automation blueprint that I want to use (here) that can only use schedules.
So my question: how are these two things, calendars and schedules different, and why are there two of them instead of just one concept? Can I merge them somehow, or cause calendar events to create schedule events?