Ending a Meeting
As host, when the meeting is over, remind your guests to click Leave Meeting in the upper left corner of their browser window.
Only Guests see the Leave Meeting option. You will may want to conclude your meeting by instructing guests: "To leave, click Leave Meeting in the upper left corner".
When your guest leaves the meeting, she will see some closing illustrations and messaging.
Tip: How do you get rid of the guest who never leaves? Renovating your space and reducing your charm are two good ideas, but your best option is to right-click on the guest avatar and select Disconnect Guest.