I have an existing Team to which I'd like to add a Shared Calendar. I've found instructions to create a Calendar App in SharePoint, bring that Calendar URL over to a Teams Website Tab, and use Connect to Outlook on the Calendar page.
Problem 1 - It's not allowing me (the admin/owner) to add appointments. It brings up the appointment dialog but it's not saving.
Creating a shared calendar for a Team is seemingly an absurdly difficult task. What am I doing wrong?