How to enable and disable the ability for attendees to book meetings with each other ?

1. Click on "Meetings" from the sidebar

2. Open the Meetings setup tab

3. Under "Who can meet whom", click on "Add rule"

4. Click on this field to the select the kind

5. Select on "No one"

6. Click on "Choose a group"

7. Click on "users"

8. This displays the attendee cannot set a meeting with each other. Click on "Save" button to save the settings.