After rinsing your herbs, make sure you dry them thoroughly before putting them in the bowl. If they are still damp, they will tend to stick to the walls of the bowl when the appliance is switched on.
For coarse chopping, use the PULSE button. For a finer texture, use the AUTO button. The mini bowl is ideal for chopping small amounts of herbs. If chopping using the main bowl, you may find you get a more even result if you switch the product on & drop the herbs through the feedtube onto the moving blade.