139 Excel | How to add, remove or reposition text used to label each axis?

Click on the chart and go under Chart Tools and Layout tab. In
Labels section click on “Axis Titles” and from the appearing menu
choose which axis you wish to edit. From the next selection
determine whether you wish for the title to show up or not. Also
choose the placement for the title if you decide to show it on the
chart. Unfortunately no live preview is shown however you get a
pretty good image of the display from the little picture before
every selection. - Office ToDo