Different referral commissions for membership levels with S2 member

Hi,

I’d like to set up the plugin to pay different referral commissions (percentages) of the monthly membership cost when someone signs up for a monthly membership. I want it to pay these figures monthly based on their continued membership. I have two membership levels and I’d like to specify a different percentage for each level. Is this possible using the plugin? It looks like the API might do it for me, but you could give me an idea as to how I should be coding this?

Thanks,

Matthew