I too would like this option of adding emails from the same company to attend a meeting. Not sure how this can happen.
The way AJ in customer support answered my question was"
“As it turns out, currently the way the tool is designed, there isn’t a way to add multiple team members to a meeting using the meetings link. For a contact to add their team member to a meeting, the contact that books the meeting will need to navigate to the meeting event within their calendar and add the additional team member within that calendar event”
So I’ll have to try this option for now.