Moo, harder is slower, softer is faster. If you want slower rebound, for example you would turn the clicker clockwise (harder). Compression is the same, if you want firmer or slower movement, you go to the "harder" setting adn visa versa.
I would suggest you start at the stock settings (should be listed in your manual), then use Jer's tuning guide (from
www.mx-tech.com) to assist in fine tuning.
Did you go to softer than stock springs? If so you will probably find you will need softer clicker setting in most cases, particularly on rebound (but maybe not).