Bc2000 (for the BCF2000 & BCR2000)

I'm hoping that someone can enlighten me.

I'm using a BCR2000. I have only been using the first 3 presets since I
bought it.  I now need to use a few more presets.

I have noticed that I cannot access any presets beyond preset 3 by just
pressing the preset buttons. However, I can access higher presets by
holding down the left preset button whilst turning the 4th rotary
encoder knob.  Ideally I'd like to have access to all the presets by the
preset buttons alone.

Can anyone advise me how to sort this?

Cheers