I'm not familiar with that phrase myself but I think I understand what it's getting at. The Reminders object in Service Desk is usually hidden from view - its mail purpose is to send notifications to your Users when something happens in the process. However, it is also possible to create Reminders to get sent in the future - irrespective of where the process is at.
Without being familiar with your requirements it's quite difficult to give you specific advice. However, creating a query on the reminder object is quite simple, I'd imagine the hard part is working out how to filter it to only show Reminders for a specific User. If you'd be kind enough to explain your architecture in a bit more detail we'll be able to give you more advice.
Hi Lara - I'm probably being a bit dense here - what info do you need about our architecture?
Have withdrawn i it's not that important