PrF UG slots finding a slot
From Protege Wiki
Finding a Slot
To find a slot by name in the Slot Browser:
Type all or part of the name of the slot in the Slot Lookup Bar at the bottom of the Slot Browser.
Press Enter/Return or click the Search for Slot button. If there is one match, the slot will be highlighted. Otherwise, you will get a dialog box of all the matches, and you will be able to select one.