Answer by  
                                                                                          balaram (12)
                                                            
                          
                          
                                                          Move the mouse pointer over the view option on the Menu bar, and click the left mouse-button. A pull-down menu gets displayed on your screen. Inside the pull-down menu, move the mouse-pointer over the Header option and click the left-mouse button. A Header box along with dotted line  comes up on the screen. Inside the dotted line box,  insert header 1.