Jason,
Sorry, I misunderstood. Those labels are not editable right now. We will be changing the interface within a few months and that feature may be included, but I cannot say for certain that I have seen that yet. But you can login to placester.com with the login you created when you installed the plugin and make edits there. On the 4th or 5th screen for editing a property there is a section to add custom fields. You can specify anything you like. I could have a field called kegerator taps then search for places with 4 taps to 5 taps, etc.
To include my kegerator field in a search form or listing, use the shortcode tag: [custom attribute=kegerator group=metadata] along with the type, and maybe options for the form. Make sense?