She clued puzzle to plan (8)
I believe the answer is:
schedule
'plan' is the definition.
(schedule is a kind of plan)
'she clued puzzle' is the wordplay.
'puzzle' indicates an anagram.
'she'+'clued'='sheclued'
'sheclued' is an anagram of 'SCHEDULE'.
'to' is the link.
(Other definitions for schedule that I've seen before include "List of times and places for events" , "Timetable for activities" , "Plan for an activity" , "List of intended events and times" , "Rota" .)