I think this tool should allow you to select Cache Type, and display what caches you need to fill say, a trad grid or a multi grid.
At the moment, it will only show you say, trads or multis to fill your FULL DT grid. There is no way that I can see to get Project to show you what trads you need to fill your trad DT grid or what puzzles you need to fill your puzzle DT grid.