CCMS PI Monitoring - System group not visible in RZ20 PI Box

Dear Experts,

I'm trying to configure CCMS local monitoring for my PI Dev box. I tried creating a system group for my PI dev box in my PI dev systems RZ21 and added the same. But when I try to check the system group I had created in RZ20, its not visible there..not sure what's going wrong..am unable to save the system group in RZ21 since the save button is greyed out.. please help..

Thanks