How I do configure the BigBlueButton module?
I have resolved the problem following these steps.


Install the module
On the module settings page (admin/settings/bigbluebutton), put values for Server base URL and Security salt key, and save the settings
Create a new content type, for example Conference
On the content type setting panel (for the Big Blue Button module), 
select Treat this node type as meeting and Display meeting status on node, and save the settings
Create a new Conference node and go to meeting