You can delegate a personal stream to another user and change ownership of the stream. For example, you are switching to a different task and want to delegate the changes in a personal stream to another user.
NOTE
After you delegate a personal stream that you originated you can continue contributing to it. Access is controlled by the privilege Control Personal Stream. All users in the ADMIN group have this privilege granted by default.
You cannot delegate a regular stream.
Open the personal stream that you want to delegate.
From the Stream menu select Delegate.
In the Delegate Personal Stream dialog box select a user.
Click OK. The personal stream is now delegated to the user you specified.