After creating a personal subflow, you can assign it to a Personal Subflow Activity in a process flow or subflow. To do this:
Right-click the Personal Subflow icon and click Properties in the shortcut menu.
On the General tab, type a name for the Personal Subflow Activity in the Name box and a description (optional) in the Description box.
Click the Details tab, and choose the individual to whom the personal subflow will be assigned by clicking the Select... button and selecting their name from the Actor selection dialog.
Click User-Defined in the Work Item Priority list to permit the participant at this subflow to set priorities for work items.
Click the Subflow tab, and click on the personal subflow in the subflow list.
Click OK.