You can edit the settings of a conference in your course. You can add new users to the conference, but you cannot remove any users who have already been invited.
Note:
In Course Navigation, click the link for your web conferencing tool.
Click the conference you want to edit. Click the Settings icon [1] and click the Edit link [2].
Edit the fields you'd like to change.
Save Conference
Click the Save button.
View the updated Conference.