The only way to close the current meeting is to click 'ignore' so I can end the current meeting and then click on the 'lock' icon to unlock the meeting. I tried to move the box with my cursor but that did not work. If the box to announce 'a new attendee is waiting to join the meeting' would appear elsewhere on the screen, I could close out my current meeting and then use that box to have the next person enter their meeting. I hope this is understandable.