Protect my room
Here is how your room may look like, depending on whether it's open, locked or protected by a PIN:
Click button 7 to lock your room:
or button 3 on your moderation control:
and set a PIN for your personal permanent virtual meeting room by pushing button 9:
or button 7 in your moderation control:
<-- In this menu you find the appropriate field to define the new room PIN.