HELP!!! Webinar breakout rooms

Hi! I will be using webinar breakout rooms for the first time today. I scheduled the webinar BEFORE upgrading to Zoom sessions. I have enabled breakout rooms in account management... just concerned that the breakout rooms wont be there when I start the webinar! Is there any way to test it? I tried a test webinar and maybe because it was just me there, the breakout rooms wasn't showing in the webinar controls. 

Do I just have to trust it will appear for me? 

It would be better to be able to create the rooms before the webinar starts!