MonoX searc system is built upon provider concept (see here and here for more info) - you can always build your own custom provider for any type of search. The base namespace is MonoSoftware.MonoX.SearchEngine, and there is a number of providers (for groups, blogs, documents, photos, profiles, file search, indexing service...) in the MonoSoftware.MonoX.SearchEngine.Providers namespace. Providers are registered via web.config. If you are going to write your own provider, it must inherit from SearchProviderBase and implement ISearchEngineProvider interface. More info is available in the API documentation.
When you click on the search button, MonoX calls the Search method in all registered providers, aggregates the results and displays them in the search Web part.

on the dashboard page ......there are three sections
1- Blogs with search option
2- Groups with search option
3- Users with search options

I want to add radiobutton to Groups and Users below search textbox