Any screen that has lists seems to have an arbitrary amount of items listed. Some have 10 some have 20 or more. In all cases, long lists paginate whenever the count exceeds what the screen can show. However, there is no way to select how many items are shown on a screen. Sometimes it would be hugely helpful to change a list of 10 (with 3000 pages) into 100 items (and 300 pages). It's a simple view control.