“Please apply after a minute!” (5)
I believe the answer is:
amuse
'please' is the definition.
(I've seen this in another clue)
'apply after a minute' is the wordplay.
'apply' becomes 'use' (synonyms).
'after' says to put letters next to each other.
'minute' becomes 'm' (abbreviation).
'a'+'m'='am'
'use' after 'am' is 'AMUSE'.
(Other definitions for amuse that I've seen before include "Cause to laugh or smile" , "Recreate" , "Pleasantly occupy" , "Reflect" , "Keep occupied" .)