Is there a way to have an advanced registration so that you know who is attending a meeting ahead of time?
As a workaround, you can use chats in Blizz for coordination.For example, you can create a group chat for a meeting and communicate there.
If you and meeting participants are using Outlook for email, you can also use Blizz add-in for Outlook. It is possible to create Outlook meeting from Blizz one. And you can track participants In Outlook.
Hello, MysteryJock
Thank you for your question. But there is no such feature in Blizz.
--Artur