Does a member has the O.R.B. from these 2 Unit ?

Pilot Officer was posted to

14 OTU on 04/05/1943 to formed his crew

I do have the date for Sgt Fontaine, Thomas and Haines.
Missing is Sgt James Brent Navigator : when was he posted to 14 OTU and from where ?

1661 HCU
The crew was posted 27/07/1943
complete the crew :
Sgt Harry Stagg Flight Engeneer
Sgt Henry Lucas Air Gunner
Whem were they posted and from where ?

Thank for your help.

Best regards