Steps to setup in Zoom

1. Sign in with your Zoom Account. To create Zoom OAuth App , go to Zoom marketplace
    (https://marketplace.zoom.us/develop/create).
    Create your OAuth app and get your client id and client secret and set the redirect url in the Production app credential settings for production usage.

The format for the redirect URI: 'Your web base URL + /zoom_meet_authentication'.

Add the Scopes for the zoom app which is mandatory for the meeting creation as shown below

To obtain your web base URL, you can refer to the Odoo system parameters settings, as shown in the screenshot below. Afterward, append the controller URL ('/zoom_meet_authentication') to the base URL and assign it to the redirect URI field in both the Zoom app account settings and Odoo company settings.

Go to Settings-> Companies Then click on the company name and select the Zoom Meeting tab. Enter the Client id, Client secret and Redirect Url in Credentials.
After entering all the details click on Authenticate.

After successful authentication, now you can create Zoom Meetings to your Odoo calendar.

When the Zoom Meet checkbox is enabled, a Zoom meeting link is generated.

By clicking the Join Meeting button, you can also join a Zoom Meeting.

After you've created the meeting, you can view it in Zoom calendar and scheduled meetings.

Email the meeting information to all event participants

Disable the Zoom Meet checkbox or delete the calender event to delete the meeting. From Zoom also, the meeting will be removed.