This video shows how to insert Roman numeral symbols into your Microsoft Word document.
Roman numeral symbols can be found under the insert tab, then symbols, then more symbols. Once a small window pops up, change the font to '(normal text)' and subset to 'Number Forms'.
The Roman numeral symbols each come with their own unique character code and unicode, however selecting one and pressing the enter key will insert the corresponding roman numeral symbol into your Microsoft Word document.