A progression of long notes over at least 8 bars will ensure subsequent steps have maximum effect. To specify your own progression, enter the notes into the Piano roll prior to opening the Riff Machine and select Work on existing score at the bottom of the window.
This step can be excluded from the Riff Generator by deactivating the switch.
Select predefined note progression patterns (click on the Pattern folder icon to load).
These controls augment/modify the selected progression. Note that some controls will only have an effect if the original progression includes some variation in that parameter (PAN for example).