Thank you for the question, Shelley.
We think it is reasonable to believe that Greek letters "may be unfamiliar to the reader" (as BF2016 2.5.1 says). So, we would recommend including them on a Special Symbols Page.
I would recommend following the layout and wording given in Rules of UEB (RUEB) 4.5 to compose the SSP listings for any Greek letter.
–Kyle