Click on a column heading to sort the list by that heading. You can also select the column you want from the 'Sort by' drop-down list and click the Submit button. The 'Sort by' drop-down list will always show what column is currently used for sorting the list.
Sorting is carried through paging, so if you are on page 6 when you sort, then you will see page 6 of the sorted results. To go to the beginning of a sorted list, click on page 1.
The 'Reset' button sets sorting to the default sorting column: Job Title.