SCUM Selection Greyed Out

Hi all,

I am trying to enable settings in which will allow role assignment in BOTH CUA and child system. Unfortunately, the selection for "Everywhere" is greyed out in SCUA --> Role/Profile tab. In my work environment, there is a need to allow role assignment in both master and child systems. How o I go with this? Couldn't found anything in Notes & SCN. Thank you for all your feedback!