I received my Trophy yesterday and after doing the initial config with Octopus Intelligent so it switches my tarriff over and pair with the Ohme Pro, it was fairly easy to set it to charge.
My installer told me to ignore / disable the pre-defined schedules in the Ohme app so I just deleted them. The settings I went for:
Set my car to accept maximum of 100% battery level. Didn't set any schedules in the car.
In the Ohme app, set it to charge when rates are cheapest i.e. 23:30 to 5:30 and capped it to not charge when rates are over 7.5p (overnight rate) so there's no chance of it charging earlier. Plugged the car and locked early evening and as expected it was not charging. Come 23:30 charging started and it went from 32% to 97% by 5:30 when the overnight rate stops so the charging stopped too.
Hope this helps anyone on OI with the Ohme Pro charger.