Prior to using your Zoom integration with Smokeball, you will need to get an account set up with them.
The integration requires a minimum of 1 admin/owner account level in order to authorise. Other users will then need to be linked to this admin account.
Here are some helpful links to get started:
Zoom - Create an account: https://zoom.us/pricing
Zoom - Account types: https://support.zoom.us/hc/en-us/articles/201363173-Account-Types
Zoom - Managing Users: https://support.zoom.us/hc/en-us/articles/201363183-Managing-users