To edit the existing Denomination Rule

1. Go to the Magento Admin panel.
2. On the left navigation bar, click the AFFILIATE SYSTEM menu.
   The menu appears as shown in the following figure:
   
3. Click Denominations Rule.
   The Denomination Rules page appears as shown in the following figure:
   
4. Scroll down to the required Denomination Rule to edit.
5. In the Action column, click the Edit link associated with the required account.
   The page appears as shown in the following figure:
   
6. Make the changes as per the requirement, and then click the Save Rule button.
   The changes are saved.