MarketPress and Affiliates

On your Affiliates plugin page, it says it integrates with MarketPress:

"When the MarketPress add-on is activated, you’ll see a new Affiliate Settings section in the MarketPress settings at Products > Store Settings > Payments. Enter a value for the Set percentage to be paid to affiliates option to credit affiliates a percentage of the referrals they make resulting in MarketPress product sales."

I'm on a multi site, and I do not see this setting anywhere at the network or site level. Where can I find this? Support access has been enabled if needed. Thanks.