Hang around for a time outside the help centre (5)
I believe the answer is:
delay
'hang around' is the definition.
(thesaurus)
'time outside the help centre' is the wordplay.
'time' becomes 'day' (day is a kind of time).
'outside' indicates putting letters inside (some letters go outside others).
'centre' says to take the centre.
The central letters of 'help' are 'el'.
'day' going around 'el' is 'DELAY'.
'for a' 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" .)