@DamnedToWin Each user account will need to host a meeting separately.
So if you have user *********** and user ***********, you need to assign a license to both users and then each user can schedule a meeting and run it separately. This is the only way to achieve concurrent meetings with a pro account.
Looks like that. In my eyes this is an unnecessary and frustrating constraint. Instead of incentivizing to grow from single accounts to merged accounts and over time to develop into a business account Zoom is doing just the opposite. Not being able to run concurrent meetings any longer due to the merge disappoints me.
Hopefully Zoom is giving that issue a second thought.