Almost every report/list in SAP can be modified and show different columns:
First click on this button:
In the next screen you can select columns from the right side and then transfer them to the left side.
The columns on the left side are the ones that appear on the screen.
You can also change the order of the columns by using the arrow buttons on the top left.
You can also save the layout that you created, by pressing the save as
Give a name for the layout and be VERY CAREFULL to click on the "USER-SPECIFIC" check. This means that this layout will be available only to you.
If you dont click it then everyone will see a big list of layouts and it will not be usefull.
If you want your new layout to be your default layout then click also the default check: