Click your profile, then click My Delegations.

Click New Delegation.
A new row is added at the top of the delegations table.
Enter a Name for the delegation.
Double-click the Workspace drop-down and select the workspace for which you are delegating work.
Double-click the Start date and End date fields to set the period during which you want the delegation to be in effect.
Double-click To user and select the name of the user to whom you are delegating work.
Click Save
The user to whom you have delegated work is notified via email.
The Delegations tab includes both delegations you have set up for yourself and delegations that have been set up for you by other users. Any time you have active delegations, the message You Have Active Delegations appears at the top of the screen. To track work that has been delegated to you, see Track Delegated Work.
Clone an Existing Delegation