When a Greenroom Presenter is invited to a Greenroom by the Producer, they get sent an auto-generated email invite, giving them the opportunity to join that Greenroom from a button in the email. This initial email is what presenters will reference when entering the Greenroom for the first time, and when it comes time to enter the Greenroom for the main virtual event.
The Greenroom Producer can also invite the list of Greenroom presenters to a Rehearsal or Tech Check that can be set up through the Setup > Info settings area. Creating a Rehearsal or Tech Check for a set date and time will not only send an additional invite to the Presenters, but will also send them a calendar invite that can be reflected on their email or calendar application.
Within Setup > Info > Greenroom Settings, there is a new tab for Email Invites, which can be turned ON or OFF. When you first enter a Greenroom it is defaulted to ON. This means the Greenroom will automatically send email invites.
When you turn the Email Invites tab OFF, it will prevent automatic Greenroom emails to be sent to your presenters when inviting them to a Greenroom, Rehearsal, or Tech Check. This allows Greenroom Producers to create customized invites for their presenters through their own email platforms, where they can then reference the specific Greenroom presenter link to their invitees.