Because you want the introduction's page numbering to be capitalized Roman numerals, expand the "Page Number" drop-down menu again, but this time, click "Format Page Numbers." ...

How Do I Change My Header From Numbers to Roman Numerals in the Microsoft Word Processor?. Microsoft Word 2013 uses standard numbers as the default page numbering scheme for your document.

How to Create Page Numbers After a Numbered Index in a Word 2010 Document. Numbered index pages in a long Microsoft Word 2010 document can help your reader quickly find information; but if you add ...