Where are completed Reminders?

Aside from the fact that I lost many of my lists in the upgrade there seems to be no way to see completed reminders in the desktop app in Catalina. Actually the same goes for played podcasts although I stumbled onto a way to show them after clicking everywhere. For reminders I sometimes have a project change and I want to unclick a completed reminder so it's on my radar again and I can't figure out how to do that.

Is it me or does Catalina seem dumbed down past the point of being useful? I am so frustrated so far with this upgrade.