QuarkXPress uses more than one dictionary when spell-checking a document. Here is how to quickly add a list of new entries to the Auxiliary dictionary, perhaps to add proper names or industry-specific terms:
To create a new Auxiliary dictionary, choose Utilities> Auxiliary Dictionary… then type in a name for it and click the New button.
Then create a QuarkXPress document containing only a list of your special words. Choose Utilities> Check Spelling.
When XPress highlights the first suspect word in your document, hold down the Shift and Option/Alt keys and click the Cancel or Done button. This will add every suspect word in your document to your current auxiliary dictionary.