Link to Speaker's Profile

When all enabled and Speaker added to an event (actually event added to a speaker), the details about that speaker including the image, will show up in J3, but not in J4.
In J4, only the name will show up if added in Extra Information tab.

never mind. But you do need a comprehensive list of plugins and what each does, or when is needed

Hello

Yes. That's documented . See eventbookingdoc.joomservices.com/plugins/speakers

Regards,

Tuan