If you use chlormequat you'll have to follow up with Terpal. For long strawed hybrid barleys pushed hard for yield I used 0.1 Moddus plus a litre of 3C at GS30, again at GS31/32 then a litre of Terpal at GS 33-awns showing.
None of my wheat looks excessive but will get 1.2 3C at T0 and T1. I doubt I will follow it up later unless it looks really leggy.
I've sprayed our barley with this mix this wk
0.4 siltra xpro
0.150 moddus
0.100 torpedo
1.5L Stablian.