Adds a schedule item to a draft schedule. For the same date and time you can have multiple items.
Note that draft items are not publicly available unless published.
This method may require higher-level permissions than the caller has, based on their identity and roles and permissions. In these cases, you can ensure the method is called with the required level of authorization by using one of the following:
Event ID to add the schedule item to.
Optional fields.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.