Assigned (7)
(Other definitions for granted that I've seen before include "Conceded" , "Admittedly; given" , "Admitted" , "One doesn't like being taken for it" , "OK - allowed" .)
'assigned' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for allotted that I've seen before include "Earmarked" , "Given, apportioned" , "Divided" , "Distributed in shares" , "Portioned out" .)
'assigned' is the definition.
(allocating is a kind of assigning)
This is all the clue.
(Other definitions for allocated that I've seen before include "Assigned" , "Apportioned" , "set aside" .)