Skype for Business, How to Manage Calls as a Delegate

How do I redirect a call as a delegate? How to I answer a call as a delegate? How do I make a call as a delegate?

The following webpage contains up-to-date instructions on how to manage calls as a delegate: https://support.office.com/en-GB/article/Manage-calls-as-a-delegate-for-a-Skype-for-Business-user-16bb9209-a0ab-4005-94b1-fb2e99c85e84.