You can sort each column ascending or descending by clicking on the column title.
You can sub-sort by shift-clicking on a column heading.
Thus if you click on Class, then shift-click on Category, the entries will be sorted by Class and within Class by Category. If you click on Category then shift-click on Class, the entries will be sorted first by Category and within Category by Class.
Teams show in this colour have paid the waitlist fee, and are not fully registered until the full fee is paid.
Teams shown is this colour have paid and are registered, but their registration is missing some required field.