When someone borrows an item, other neighbors may still want a turn with it. A waiting list decides how they line up. Each library picks the style that fits its community when it is created, and new libraries default to First Come, First Serve.
Neighbors are offered a borrowed item in the exact order they joined the waiting list. This is the default for new libraries.
The library does not keep a waiting list at all. When an item is returned it simply becomes available again for whoever asks first.
We are exploring additional waiting list styles — such as a quadratic waiting list that balances turns more evenly across the community. They will show up here as choices once they are ready.