I am making a survey to keep track of ipads when they leave the office. I read in another post to use quotas and display logic to hide the ipads that were checked out. On my survey I give the person the option to check in or check out a survey. Once the person clicks on check out they will be presented with 5 ipads to check out. The person can select more than one ipad to check out. All the ipads have quotas of 1. For example if a person checks out Ipad 1 then Ipad 1 will disappear from the survey. I was wonder how can I make the quota go back to 0 if a person chooses the check in option without manually going to quotas and changing that quota back to 0?