yellow exclamation point icon & updating events in Mac Calendar
I have 2 questions, maybe related. First is, what does the yellow exclamation point icon next to an invitee's name mean? Second, sometimes I make an event update and no one gets the update. How do I make sure they do? I don't want to email them, I just want the updated event pushed to their calendar. I think sometimes a pop-up asked if I want to do this when I made an update but sometimes it doesn't.
MacBook Pro 13″, macOS 11.5