Controlling access to your Vyew Rooms
Access Control settings are located in the UserList:

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Invites Only (default)
Only people you Invite, can access your Vyew Rooms (More about invites).
Owner Only
This option locks out everyone (including those invited) execpt for the owner.
Open to Anyone
To let everyone access your Vyew Room anytime, you can set it to “Open to Anyone” which will effectively leave your Vyew Room unlocked.
Anyone with the direct URL to your Vyew Room will have access, unless you have the Password Option checked. More about passwords.