Event Calendars

Hello, 
Our site includes the promotion of our workshops and events.  Some events are held both in-person and online.  We have three separate calendars based on our two physical locations and our online program.  I would like to add an event description once, but have it show up on two calendars - without having to enter the event twice. Is there a way to do that?  Thank you.  

Duplicating the event and then moving it to the other event page might be a solution that works for you.

Ideally, you would have one Events page, and then be using Categories for the 2 physical locations and online, allowing you to select 1 or 2 of these to show up. Then you could use summary blocks with filters for the pages, or a single page with filters, whatever would work best (this filtering doesn't work with the calendar block though). If you wanted more control over filtering, ordering, and searching, you could also consider this powerful plugin:

https://www.squarewebsites.org/squarespace-plugins/universal-filter