How to make a concurrent program to run for a Single Operating Unit in Oracle Apps R12?

Navigation as follows:

--> System Administrator Responsibility:
--> System Administration --> Concurrent --> Program

1) Enter Concurrent Program Name/Short Name and click on "Go" button
2) Click on Update Pencil bar
3) Go to Request Tab
4) Select the Operating Unit Mode as "Single" from List
5) Click on "Apply" button