The Roam Meetings for Google Workspace add-on must be installed. A Google Workspace admin can install it for all members, or individuals can install it for their own Google Calendar.
To schedule a meeting in Roam using Google Calendar:
This creates and add a unique meeting link to the calendar event. See Creating & using meeting links for more information about how meeting links work for guests. You can optionally set the access level for the meeting.

Note: Calendar events created before March 12, 2025 may not include dial-in instructions. To add them, remove and re-add Roam Video Conferencing to the calendar event.