It helps one to see how some provisions are distributed (5)
I believe the answer is:
visor
'it helps one to see how some provisions are distributed' is the definition.
The definition suggests a singular noun which matches the answer.
'it helps one to see' is the wordplay.
I cannot quite understand how this works, but
'one' could be 'i' (Roman numeral) and 'i' is found within the answer.
'see' could be 'v' (short for 'vide', Latin meaning 'see elsewhere') and 'v' is located in the answer.
The remaining letters 'sor' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for visor that I've seen before include "Eyeshade" , "Sunshade" , "Movable shield on helmet" , "Helmet's face-cover" , "Eye shield" .)