To save a pre-set on pre-set number 5 you will need to be listening to the station that you want to save.
Press and hold 5+ until the screen says store. Then press <or >until you reach pre-set 5. You now hold select down for 3 seconds.
You will know the station has saved as the radio will say pre-set stored.
You can then repeat these instructions to save 6-10
To recall pre-set 5 and above
Tap 5+ once and scroll using <or > when you reach the pre-set station you would like to listen to press select.