can anyone tell me is it possible somehow to control the item that appears in News Pro GK4 in Top1 position by using the 'featured' button that exists beside the item in K2 item list?
If i understood well, you want to display only featured K2 articles, right? If so, it's possible by enabling "Frontpage items only" parameter on "Data source" panel. You can also set News order and News sort order.