Way to work around imposed changes (5,8)
I believe the answer is:
modus operandi
'way to work' is the definition.
'around imposed changes' is the wordplay.
'changes' indicates an anagram.
'around'+'imposed'='aroundimposed'
'aroundimposed' is an anagram of 'MODUS OPERANDI'.
(Other definitions for modus operandi that I've seen before include "Method of working" , "way of doing things" , "Classically typical style" , "Particular way of doing something (Latin)" , "this shows how it's done" .)