It is easier than you think. For instance, you need to set a 30% discount on all themes in the shop.
1. Access the RMS2 admin area (http:www. yourstore.com/admin).
2. Go to Settings =>User Settings (/admin/settingsuser) and press Add New:
Add DISCOUNT to the Name field
Add discount description to the Description field
Add your discount rate (eg. 0.7 to set a 30% discount)
4. Go back to Settings => User Settings ((/admin/settingsuser) and press Add New.
Add CALCULATE_DISCOUNT to the Name field
Add turn on the discount to the Description field
Add 1 to turn on the discount and click Submit
5. Additionally, please, make sure that you've sent the same discount % for the RMS2 preset shopping cart in the affiliate area Price Settings:
6. As you've set the discounts for both RMS2 and its preset shopping cart, please, update the shop (so that the shop prices are the same and correct).