TimeShift allows you to pause live TV, and continue watching it when suitable.
In order to utilise the TimeShift function, you must have a USB 2.0 drive attached to your set top box or TV.
You can configure the TimeShift option within the REC & MEDIA section of your unit's menu.
Once you have accessed this menu, please navigate to the DVR configuration window, where you can see the TimeShift options.