Is it possible to show multiple display groups in SharePoint search instead of scope dropdown. How to customize the search result page? i need to change the result page in which if i click on the result link corresponding description should be displayed at the bottom of the result page. For that i need to know in which format the result will be returned..
You can add multiple display groups by going to Site Actions -> Site settings -> Search Scopes under Site collection settings.
Now, if you have added multiple display groups, you can configure each of those display group for each of your search center in your sites or subsites. Basically if you edit the results.aspx page in the search center, you can edit the scopes drop down web part, where you can see an option to enter the scope display group name. This will enable you to select any of the scope display groups that you have already created.