With this module, you are able to make a collection of simple products grouped in a promoset product and specify a fixed price or a discount percentage.
With this module, you are able to cancel the usage of coupon codes when cancelling orders in Magento. Ofter people use a coupon code but end up with a pending order in Magento. In their new order they are no longer able to use the Magento coupon code from the pending order. Cancelling the pending order will release the coupon code.