Question for the Adobe banner component: Where to define the list of values of the bannerArea property



I drag the adobe banner component into the search result page, but the bannerArea property has no values in the drop down. Does anyone know where to define the values? I looked at the banner component jsp, The adobe SearchPromoteService has a method called getBannerAreaList(memberid, accountnumber), so the list most probably is defined in Adobe site somewhere. Can someone point out where it is or any documentation I can follow?