Here is instruction of how to use time shift.
Firstly, you should format usb stick memory of micro sd memory to FAT32 format in your pc.
Insert it to Dreamlink USB or Micro SD slot.
Check if stick is mounted correctly thru File Browser APK which is preinstalled at My APPs menu
While watching a live channel, press Left button on remote, and you will see progress bar popping up at bottom on screen.
Enjoy time shift by using Left, Right or ok button.