After you have played a "BBO" event, the results can be found at a special BB Utility page, usually of the format. You will require this whatever method you use to access the BBO Results

http://webutil.bridgebase.com/v2/tarchive.php?m=h&h=hostname
where hostname is your hostname for your club,
Use this list to find the latest result.

If you click on the Title, the results will show in a popup. HOWEVER, if you hover over the title and "Right Click" most browsers will open up a pop option that allows you to "Open in a New Tab"

Then you will see a web address such as the following

 https://webutil.bridgebase.com/v2/tview.php?t=3917-1585144986

The number after the t= is the BBO Session Number e.g 3917-1585144986
You need to mark this and copy the session number and paste into the "Online Session No" field n the Results Administration - "BBO Online" Tab