There are multiple pages within EnterpriseTrack where you may be required to select a date or a date range. You can either type in a date into the entry field or click the Calendar icon to bring up the calendar. Click on a date to select that particular day.
Click Today to select today's date. You can move to the next month by clicking on the right arrow or by pressing CTRL and the Right Arrow keys on your keyboard. To go to the previous month, click the left arrow or press the CTRL and the Left Arrow keys on your keyboard.