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Update leaders' guest invitations and report each link change.
Guests get the current video link in their meeting invitation, and you get an email showing what changed.
Send a new guest the current link for a leader's meeting.
Your new guest gets the current meeting time and joining details by email, while you get a confirmation without emailing the other guests.
Keep leaders' meeting invitations current when joining details change.
Your meeting invitation carries revised joining details, and your colleague gets a reply showing which guests were included.