I have checked the same on the Staff Travel website, and Albergineman is correct in that we are unable to select these travel options, which I suspect is a technical oversight which they need to hammer out, just like the inability for us to select ID90 J class on GF which they straightened out before the early afternoon on March 1st.
The HR gentleman who replaced EE overseeing Staff Travel seems very commited to revamping and improving on Staff Travel's services for employees. Already they have added at least one new airline (the German airline "Condor" [DE]) and I know he as a wish list of other airlines to add. I am therefore optimistic about offerings from Staff Travel in the future.