You do that through 'custom filters' (search for it in the search bar) There you can add a new filter, and besides the basics (which country etc) you can also select attributes that are required. You then name your custom filter, and when looking for a cache you can add a custom filter and select the one you made. I just did this, the only problem is: I made a filter for night caches, but if I add it to my search for top favorite % the caches that show up are not night caches. So it doesnt seem to work that well yet for me. Not sure how to fix that yet.
