20.04 – Can I have a desktop shortcut for Google Calendar?

My Ubuntu 18.04 laptop has a desktop shortcut link that opens my Google Calendar. Someone else set it up for me; I don’t know how they did it. I installed Ubuntu 20.04 on my desktop computer and would like it there too. I can’t find how to do it. I’ve had suggestions on how to sync entries with GNOME Calendar, but that’s not the same. Is there that much difference between Bionic and Focal, or did I receive especially advanced help three years ago setting up my laptop?