Adding a new substatus in Appraisal template

Hi All

I am trying to add a new substatus in phap_catalog_pa. The status has been defined in oohap_basic , but while checking the same in phap_catalog_pa , it throws the error , " Status cannot be deleted ".  I am able to view the substatus but unable to select the check box.

Please let me know how can i add a new status in the existing template.

Thanks