Rekordbox Dj and DDJ-SP1

Hi, I have plugged in the DDJ - SP1 controller for Rekordbox DJ.

I noticed that the default mapping works pretty well, except for 2 things.

The Relative and Internal modes cannot be activated using the DDJ-SP1.. When I press Shift key and the buttons for the Rel and Int, it does not work. 

Is there a way to manually add it? Do I need to update the firmware or something?