Contribute in a flexible way (6)
I believe the answer is:
supply
This clue is a double definition.
'contribute' is the first definition.
(I've seen this before)
'in a flexible way' is the second definition.
(I've seen this before)
(Other definitions for supply that I've seen before include "Make available" , "Provide; flexibly" , "Stand-in teacher" , "Fund" , "Give" .)