After you've set up your Zoom API keys, you'll want to set up some meetings.
Within the plugin, there are two types of meetings.
Post Type Meetings are created when you create a new post from Zoom Meetings > Add New page. These posts are related to your site and meetings created from here are binded to your site. With that said, deleting any linked meeting without deleting the Post first would result in failure to join the meeting for the end user. Basically, this will create a Meeting on your Zoom Account and a Post in your WordPress site which is linked.
Actual Live Meetings are created from page Zoom Meetings > Live meetings section. These meetings are not binded to your site. This will create a meeting in your Zoom Account and will not create or add any additional data on your WordPress website.
If you want to show these meetings from your site then you'll have to rely on using shortcode using the meeting ID value here.
You can copy and paste the shortcode into a Page or text module.