We need a g-suite calendar addon
As a domain administrator I need to be able to install addon on a full domain (all users on domain are effected addon).
As a user, when I save/update a calendar event, I need to see a popup that block save/update of a calendar even until I "ok."
As an addon I need to save event details to a REST endpoint.
As an addon if the REST service returns anything beside 200 I need to log the error