Site logo, preloader, certification or awards ,top bar details such as phone and address of the website, policies, activities , projects and mission text under banner and footer content can be updated by Appearance -> Theme Options. Home Page Banner Image slider can be changed from banners.  Projects Gallery section can be updated from Services in admin backend. Enquiry form can be configured from Contact -> Contact form-home on backend. News and Events section can be updated from News in admin backend.