Delegations let you temporarily assign your work in a workspace to another user while you are unavailable. This helps ensure work continues without delays. Use My Delegations to create and manage your own delegations. Site administrators can also create and manage delegations on behalf of users (see Delegation Manager).
The My Delegations page shows:

Each delegation has a start date and an end date. During that time, work that would normally be assigned to you appears on the delegated user’s My Outstanding Work dashboard instead.
When you have active delegations, the message "You have active delegations" appears at the top of the screen.