Request place to be given to each (4)
I believe the answer is:
plea
'request' is the definition.
(I know that plea is a type of appeal)
'place to be given to each' is the wordplay.
'place' becomes 'pl' (abbreviation used in postal addresses).
'to be given to' means one lot of letters go next to another.
'each' becomes 'ea' (abbreviation).
'pl'+'ea'='PLEA'
(Other definitions for plea that I've seen before include "Excuse - pretext" , "Defence - excuse - appeal" , "Lightly char" , "Guilty perhaps" , "Excuse; petition" .)