Where could I create a "Displayed fields subprofiles" for CM07?

Hi,

I need to create new profiles for CM07 in order to adapt the detailed cap. list layout to specific users requirements; in fact every category of users needs its own combination of fields.

I think that I'd create specific "Displayed fields subprofile" and select it in OPDT, but I can't find the customizing point where I could create this subprofiles. I attach an image to show what I mean better.

Could you help me?

Thanks!