Search by attributes

Hi. I’m using the plugin for a listing of our museum items so that people can choose to see photographs and information about our collection. I have Attributes Table. I need to be able to set this so that people can search by the attributes – especially the first attribute, which is the object number (e.g. P-221107-01, like a SKU if it was an ecommerce site). I can’t find how to do this, is this possible?

The page I need help with: [log in to see the link]