vMix has opted not to implement the Zoom Events join flow available in our developer platform, which is a feature we encourage all of our broadcast integrations to implement. As a result, their integration is not able to be used with Zoom Events.

In case you're curious, the procedure for developers to join Zoom Events via our Meeting SDK is outlined below:

Scope Zoom Events read and Zoom Events Sessions read on your access token
Call the Zoom API function List Events twice, once with a param for host role, once with attendee role
When the user selects an event, use the ID to call List Sessions
When the user selects a session within the event, use both the event ID and the session ID to get the join token
Append the join token to the Meeting SDK Join Parameters object’s .join_token parameter
No meeting ID or password is required to be added. With the other required fields attached (such as the user ZAK and name), call the Join Meeting function in the Meeting SDK.