Choosing committee for project's planning stage (7,5)
I believe the answer is:
drawing board
This might be a double definition.
'choosing committee' is the first definition.
'drawing board' can be an answer for 'choosing' (as in drawing lots). I am unsure of the 'committee' bit.
'project's planning stage' is the second definition.
(back to the drawing board)
'for' is the link.
Can you help me to learn more?
(Other definitions for drawing board that I've seen before include "One may have to go back to it" , "Something to go back to when stuck" , "Planning stage of project" , "Flat draughtsman's surface (often gone back to)" , "Back to it, for complete rethink" .)