Making permanent changes to the views is allowed to power users only. However, you can temporarily edit views for your own needs. 

• You can remove unnecessary data columns by clicking the column header and dragging and dropping it upwards, outside the view until a black cross appears over the title.
• You can filter the list data based on the values of individual columns. To do this, hover the cursor over any column header, click the funnel icon, and select the desired values. 

• You can sort data based on column values in alphabetical or numerical order by clicking the arrow buttons on the column headers.
• You can change the order of columns by dragging their headers to a new location.
• You can group list data, for example, by author, by dragging the Author column header to the gray area above the list.