You can change a task assignee at
the point of project creation.
To change
a task assignee
In the
project creation dialog box, after specifying the workflow to use
for the project, you can change the users assigned to the various
steps within the chosen workflow. Choose More Options
> Change Assignees.
The Change Assignees dialog box appears.
Choose
the workflow step from the drop-down menu.
Choose
the user or users to whom you want to assign the step. Only users of
the project locale and workgroup are available for selection.