Pre-Approved Users to join on specific zoom events

Need your advice on how to pre-approve large users to join specific zoom events.

We plan to have a 3-days conference with around 400+ participants and I found Zoom Events might help those 400+ participants to easily join the daily events on the conference (instead of sending them individual zoom meeting links).

However, the process of registering for the events is somehow complicated for those ordinary participants - so thinking that will still use Zoom Events but would like to see the possibility for those 400+ participants to be automatically registered for all events (pre-registered by the host), hence the participants just need to log-in to events.zoom.us and can easily see the list of program events and easily join the zoom meeting of the specific program.

Appreciate your sharing - much appreciated and thanks.