tweaking reports on activity BigBlueButton

Hello All!

I have begun to use BigBlueButton as an activity component and find it to be an awesome tool within Moodle.  So here is my question:

I need to run a report of people attended, time joined and time exiting to give credit for time in training.  I cannot find any DB in Bigbluebutton, only logs.

When I look at the table in mdl_bigbluebuttonbn_log, it only reflects when a person enters.

Does anyone have a way to log time exiting?

Thanks for any suggestions

Steve