You can choose an oscillator or filter option using the associated drop-down menu.

Oscillator options accessible using the drop-down menu include wavetables, samples, multisamples, and more.

In the case of filters, you can choose the type of filter using the drop-down menu.

Click the < > arrows to quickly navigate to the previous and next menu option.

Alternatively, hover over the menu and use the mouse wheel to quickly rotate through menu options.