50GDR10 Digital TV receiver
Changing the TV/radio screen (4)
13To lock or unlock a channel, select the channel and press the red button.
14You now need to save the changes that you have made. To do this, press the ‘back’ or ‘exit’ button.
15You will now see a box on the screen that says ‘Do you want to save changes?’
16Press 
or 
to say ‘Yes’, then press ‘OK’.
17If you don’t want to save your changes, press 
or 
to say ‘No’ then press ‘OK’.