| AddDelegates(Mailbox, NullableMeetingRequestsDeliveryScope, DelegateUser) | Adds delegates to a specific mailbox. Calling this method results in a call to EWS. |
| AddDelegates(Mailbox, NullableMeetingRequestsDeliveryScope, IEnumerableDelegateUser, CancellationToken) | Adds delegates to a specific mailbox. Calling this method results in a call to EWS. |