When you open a meeting (during preparation or before starting the meeting). You will have the option to a button External Page.
This will open a new tab with the external page.
When you arrive on this page (which is available publically, so only send it to people who need access) you can enter your e-mail.
If the email is recognised to a person who is participating in the meeting, you will receive access.
Left Column
Meeting initiator notes
A small description of the meeting as extra information.
Introduction Video
This video helps introduce the people to the meeting.
A Comment block that external users can use to add comments for the meeting.
You can also add a comment that the attendees can see.
Right Column
Attendees
List of people attending the meeting, including the company they belong to.
Items to discuss
List of Themes to discuss.
Every item has an icon next to it showing who added it.
External users can add items by selecting a new theme and clicking the button Add New Theme
Items added externally can also be removed externally.