You can set the timer directly on your Anova Precision® Cooker Pro.
Select the Timer icon located on the middle right of the display (looks like a stopwatch).
Once it's flashing, press the + or - buttons to select the desired time (timer is displayed in HH:MM (hours:minutes)). Press and hold + or - buttons to rapidly increase time.
Once desired time is selected press the Timer icon to set the desired time.
Timer will commence countdown once desired temperature is achieved.
PRO TIP: If you elect to not start a timer, a timer counting up will automatically start once your desired temperature is met (i.e., you can see how long you've been cookin').