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Draft — this page is draft documentation for BigBlueButton 4.0. The details described here may change before release.
In BigBlueButton 4.0, the user list gathers the user-management functions into one place, including what 3.0 called lock settings. They are now participant permissions, and they read the way you would expect: a checked box means participants can do it. To take something away, clear the checkbox.

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Set permissions

1

Open permissions and policies

Open permissions and policies from the user list.
2

Clear what you want to restrict

For example, to stop participants from messaging each other, clear private chat.
3

Apply

Select Apply. Participants see the usual message telling them the setting has been locked.
To give a permission back, check the box again and apply — participants are told they are unlocked.

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Guest policy

The same place holds the guest policy, which decides what happens when someone arrives: See Review and Admit Guests in Bulk for handling the lobby itself.

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Presenting mode

Also in the same panel is the presenting mode — whether you assign the presenter role, participants request it, or anyone can present at any time. See Presenting Modes.

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Managing individual users

The per-user actions are the same ones you know from 3.0: make someone a presenter, promote them to moderator, or remove them. When someone is talking, their name appears at the top of the user list, and you can mute them by selecting it.
The user list has a search box in 4.0. In a session with a hundred people, search is the fastest way to find the one you need.