You will then be looking at the detentions scheduled for today. Below the detentions menu, you will see a list of filters that can be applied to the detentions display. The "detention date" and "Awarded-Date" filters allow you to view detentions by when the detention will take place and when it was awarded respectively.
Clicking inside these filter boxes will create a pop up where you can either choose between preset filters, or select a date range of your own
Click 'Apply' and you will be shown all detentions that are scheduled for the dates selected.