Hang around for a time outside the help centre (5)
I believe the answer is:
delay
'hang around' is the definition.
(thesaurus)
'a time outside the help centre' is the wordplay.
'a time' becomes 'day' (day is a kind of time**).
'outside' means one lot of letters goes inside another.
'centre' indicates the central letters.
The central letters of 'help' are 'el'.
'day' enclosing 'el' is 'DELAY'.
'for' acts as a link.
(Other definitions for delay that I've seen before include "Hinder" , "Put off; pause" , "Hold-up, time lag" , "hold-up of train?" , "Postpone, defer" .)