I hope that you can help me.
How do I get the my exposure option back to my + and - keys?
Normally I can quicky change my exposure with the + and - keys, but now it only changes my clarity in stead of my exposure. How can I change it back to my + / - key on the keyboard?
I use LR4
If your goal is to use only the keyboard, you don't have to click anything. Press the comma (,) and period (.) keys to cycle through the sliders (think of them as the < and > keys, but without pressing Shift). Keep pressing one or the other until Lightroom indicates that Exposure is active.
That's for a US English keyboard. If you're in the Netherlands, the shortcut might be different.
Europe, Middle East and Africa