NWDI Track for ESS/MSS Can't Add The Software components.

Hi

Friends

i try to create new track for ESS/MSS and add the Software components.

i have qusetion is assign Software Components are showing(i was search Sap_ess).

SAP_ESS and show list:

- SAP_ESS 600

- SAP_ESS 603

- SAP_ESS 701

- SAP_ESS 100

issue

i try to select one of the Software component(SAP_ESS 603) and add taht Software component to ESS track..

But they are not showing ADD OPTION.

CAN U ANY BODY SUGGESTION ME..HOW CAN I ADD THAT Software component TO OUR ESS TRACK.

THEY ARE SHOWING ONLY THE BELOW LISTED OPTIONS

SELECT ALL

DESELECT ALL

CHECK IN ALL THE DEVELOPED SC

CHECK IN ALL AS REQUIRED SC

How is the procedure??

Tanks@regards

Rafi Shaik