Manage function (3)
I believe the answer is:
run
This clue is a double definition.
'manage' is the first definition.
(I've seen this before)
'function' is the second definition.
(running is a kind of functioning)
(Other definitions for run that I've seen before include "Jog; manage" , "Control" , "freedom of access" , "Organise - series" , "Manage, operate" .)