To configure this activity:
Place a Work Item Merge Activity in the flow, right-click its icon, and click Properties in the shortcut menu.
On the General tab, type a name for the activity in the Name box and a description (optional) in the Description box.
Click the Details tab. If needed, select a new priority level for work items.
Click the Expiration tab. Select the Expiration Period check box and enter the maximum allowable time period that the work item can remain at this activity. For more information, refer to Setting an Expiration Period .
Click OK.