Hi, I,m running NIS and am aware of the 4 buttons you mention but I have never seen them all greyed out. The normal status is the 1st(Add) and 4th(Program Control)live and the 2nd(modify)and 3rd(remove) greyed out. If you select i.e left click any program then the greyed out buttons become active. I can only suggest you select any program in the list to see if all the buttons become active. I am not aware of any way you can alter the normal status of these buttons and have them all greyed out but I suppose there may be a setting that locks the program control dialogue box. Maybe a password or something to avoid someone enabling blocked programs. I have never gone into setting passwords in Norton.
Oh... You mean the button labelled "Program Scan" in the "Configure" option?
I think I am with you now.... They are greyed out here as I haven't logged in as aa "supervisor"... I don't know why they should be greyed out if you are a "supervisor"... Have you tried re-installing (you will have to download all the updates again)