If you want to add your Zoom account as a meeting provider on Calenso, you can register with Zoom via a Single Sign-On (SSO). With SSO, the administrator must verify Calenso once. Proceed as follows:
Add Zoom as meeting provider on Calenso. You can find the instructions here.
When logging in to Zoom, select "Log in with SSO" and enter the company domain.
You will now see a message saying that you cannot authorize Calenso. Click on "Request pre-approve". The administrator will now be notified. The administrator will then be able to authorize Calenso. This procedure only needs to be done once for all SSO logins.