The Name of the graph is coming from cells B1 to B3 where the words appear. Click on the NEXT button. This is where you add all the details to your graph. You are done identifying the data. Notice all the TABS across the top on the window.
Nothing here changes the data in any way.
These are all aesthetic changes. Be sure to include the units when labeling the axis. For this example, the units are seconds. It will be large and probably take a whole sheet of paper when printed. Unless you have a lot of closed-packed data points, this may be overkill.