Can’t find combat interface

I can’t find the interface where you select which exp you wish to gain (ie Strength, Attack, Defence, all)
Is it just hidden away somewhere in some deep dark crevasse of buttons and interfaces, or has it been removed?
How do we train specific melee skills?
Many thanks
EDIT: PS – I forgot about the feedback part. I’m loving the interface system, but it does need some tweaking. Perhaps making the combat interface more easily accessible would be a good place to start.
PPS – The number pad wont work with the ability bar either