* How can a user see all the events on my site?

A page will automatically be created when the plugin is activated. This page displays a calendar in which all the events will be listed.
To locate the Events Calendar, Go to Pages → Events.

* Can a user view past events?

Yes, user can view both past and upcoming events in your site.

* Can I set the timezone for each event?

Yes, Timezone can be set individually for each event.

* Are Location and Organizer fields mandatory?

No, Both Location and Organizer fields are optional.