Chap has time to run (6)
I believe the answer is:
manage
'to run' is the definition.
(run can mean to manage or be in charge of)
'chap has time' is the wordplay.
'chap' becomes 'man' (chap can mean a man).
'has' means one lot of letters go next to another.
'time' becomes 'age' (an age is a period of time).
'man'+'age'='MANAGE'
(Other definitions for manage that I've seen before include "Be in charge of something" , "Run, be in charge of" , "Run (eg, company)" , "Contrive" , "Run (a football team)" .)