You can prioritize your work from the Workflow page by using the award year filter at the top of the page. 

The get next button will apply the award year first and then return the oldest file for the selected award year. If "All" is selected the workflow is driven completely by the age of the document or file (FIFO). When you set the filter it will remain until you change it or you log out. You can also manipulate the filter from the View All options on each tile: