Calendar - sharing multiple events in one file.

So I am organizing an event that will include:
-lunch
-seminar
-discussion time
-dinner
All these items will happen at different times and I was wondering if there is a way to send a schedule as one file that can be recognized by smartphones and will populate calendars.

I know it can be done with a single event (i.e. dinner 7-8pm). But what is the best way to share multiple events?