Animal Shelter Manager offers you a complete replacement for your paper-based waiting list. It holds information about contacts, the type of animal, whether the owner can afford to make a donation etc.
Most importantly, the waiting list is capable of assigning an urgency rating to entries and automatically increasing that rating after a configurable amount of time has elapsed to ensure that a queue system can be adhered to.
To open the waiting list screen, you can select it off the diary toolbar,
navigate to File
Animal
Waiting List
or press CTRL+SHIFT+W