Party men handled access (4)
I believe the answer is:
door
'handled access' is the definition.
'door' can be an answer for 'access' (door is a kind of access). I am unsure of the 'handled' bit.
'party men' is the wordplay.
'party' becomes 'do' (do is a kind of party).
'men' becomes 'or' (military abbreviation for Other Ranks).
'do'+'or'='DOOR'
Can you help me to learn more?
(Other definitions for door that I've seen before include "Means of exit and entrance" , "Hinged barrier" , "place of entry" , "Alternative to knocker" , "Entrance barrier" .)