On the second screen (account settings), the setting to allow Zoom to Manage Email and Calendar events would need to be turned off, otherwise Google interprets the request for the full access scope. Even with this off, your Zoom meetings should be pushed to Google, and with the Google add-in, you can book Zoom meetings. You just will not be able to synchronize your calendar with the Zoom calendar.
Unfortunately, turning off this setting had no effect on enabling calendar through the ZOOM client. I am presented with the same access choices (and select none other than add/edit) and the same error,
So when you turn it off, you still get 4 different levels of access (Calendar, Contacts, Drive and Mail)? Are you in any groups that might be overriding that setting? If you lock the setting, it would ensure the groups can't override it, but it would also change the setting for anyone else on your account.
If you are still seeing all 4 options while the setting is turned off, I will have to check again with the engineers since that setting is supposed to be what triggers the enhanced security options.
When you refer to Groups, are you referring to being part of a larger ZOOM corporate group where we have single master account? That is not the case. My ZOOM account is not attached to or associated with a master account. I subscribed individually. I am the account owner.
For groups, I was speaking within your account. But if you are not a corporate account, you likely do not have a group option in the user management tab, and definitely you would know if you were in a group since you are the owner...