best response confirmed by ThereseSolimeno (Microsoft)

Hi @BaldRickB

if your issue is about allowing external users as presenters, then u have to mention the external users "email" address in the invite as presenter while creating the event.

snippet from microsoft documentationsnippet from microsoft documentation

 for more information about roles of participants in live events , refer link below


if u still have many questions..a similar conversation was held up in the community ,
click on the link below to view the conversation.