You may add and remove columns as desired. To add or remove a column in Advanced Reporting, click the report settings icon between the filters & graphs.
In the Columns tab (default), drag selected columns to the right-side box. Remove columns by dragging selected columns back to the left-side box. You can also change column order using drag and drop.
Once you have set your columns for reporting, you can sort or hide any column by clicking on the title of the column you wish you modify.