This module allows you to decide if a new customer is re-assigned to the first or last linked affiliate. If the same customer is referred to a different affiliate than the first one, you can decide if the reference will be changed or not.
John is a customer that is linked to Smith (affiliate). John enters the website but doesn’t buy anything. Later, John enters the website through Bob’s link (affiliate) and makes a purchase.
You can decide if John will be linked to the first affiliate (Smith), or the last one (Bob), therefore deciding which affiliate will receive a referral.