Well, that's 10 minutes of my life I won't get back, mprs! The only box with an up arrow at the bottom of my Android tablet screen is the shift key on the keyboard...
Tried using the three dot menu button and looking through all the options but no sign of the appendices.
Having said that, looking at the old~school paper version of the BRB would have saved me a lot of time searching the web for all the members of what we seem to be calling the *third* group of six.
All done, apart from worrying about the shape of the fifth member of the final group. It's proving to be a real thorn in the flesh (*ahem*).