Google Chat is a communication software developed by Google built for teams that provides direct messages and team chat rooms, along with a group messaging function that allows Google Drive content sharing.
Check requested slots and record confirmed bookings in the sheet.
You can handle booking requests in chat without checking the sheet by hand. Requesters get a confirmation or a clear next step.
Replace old joining details and resend the meeting invitation.
Your meeting invitation has the latest joining details after you post them in team chat, and you see whether the calendar accepted the guest update.