The Affiliates Jigoshop Light integration plugin creates referrals automatically for your affiliates when sales are made.
Install these, set up your shop, decide how much you want to pay your affiliates and start selling.
When a sale is made through Jigoshop, a referral is recorded for the affiliate that referred the sale.
To install and activate the plugin go to Affiliates > Settings > Integrations.
To set the amount that affiliates earn on each sale, go to Affiliates > Jigoshop Integration Light and set the rate there.
Example: If you want to give an affiliate 10% of each net total sales amount, set the rate to 0.1.
If you need more features, you might be interested in the advance version Affiliates Pro which provides additional integration options.