We have an event coming up and Im trying to use your Events+/Marketpress/Membership plugins for our registration process. Our event cost: $0 for students, $190 for members, and $285 for non members. I set up a product in marketpress and the Events+ plugin seems to be handling it. However we have a superbowl party & auction that costs an additional $25 that we want people to register for as well. Is there a way to add both items to the cart at the same time and not have our users go through the checkout process twice?