Share out in rota perhaps (6)
I believe the answer is:
ration
'share out' is the definition.
'in rota perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'in'+'rota'='inrota'
'inrota' is an anagram of 'RATION'.
(Other definitions for ration that I've seen before include "Limit supply in time of scarcity" , "One's allotted portion" , "Limit quantity as of food during scarcity" , "Limited allocation of food etc in wartime" , "A fixed allowance in times of scarcity" .)