Hi Praveen,
You may be focusing on a different add-in. The title that should appear in your list of add-ins is SAP Cloud for Customer Add-In for Microsoft Outlook.
For step-by-step instructions for downloading and installing the add-in, see the document Installing the SAP Cloud for Customer Add-In for Microsoft Outlook: https://ldcik7p.wdf.sap.corp:1443/irj/go/km/docs/~context/1602022803956/ktp/Products/BYD_COD/SalesOD/SalesOD_ACT/SalesOD…
If for some reason the link above doesn't work, simply go to your SAP Cloud for Customer system, open the help pane, and search for the document title.
Hope this helps,
Jody Kruger