I got this alright, it works the same with ZTA4 (typing ABC twice to get BA etc.).
My question was different, when you get a choice of characters / words for a given pinyin, and you want to select the 2nd option, what do you do? The choices appear on a line between rows 1 and 2 of the ABC keys, but these are not clickable, all I could find is 选字
got it. say you want to type 'laoban' on the thumboard (拇指), you go 5(jkl) 2(abc) 6(mno, press and drag right for 'o') etc. You are then presented with 4 choices : 老板、老伴、老鸨、劳保. The first 2 match 'laoban', the last 2 match 'laobao'.
To select 老板, press and drag down 1, for 老伴 press and drag down 2 (abc), for 老鸨 press and drag down 3 (def) for 劳保 press and drag down 4 (中).
This was all with 6.0 - I got confused because 6.1 doesn't supersede 6.0, it's installed on top. I have now de-installed 6.0 and noticed that the interface is a little slicker, the choices now come all on one line above the keys much like ZTA4, much clearer. Only confusing thing is the language key at top left (中文/英文) shows status, not action. So 中文 means you're in Chinese writing mode, not that by clicking on it you would change to Chinese.