Composed directions to appointment (6)
I believe the answer is:
sedate
'composed' is the definition.
(I've seen this in another clue)
'directions to appointment' is the wordplay.
'directions' becomes 'se' (I've seen this in other clues).
'to appointment' becomes 'date' (synonyms).
'se'+'date'='SEDATE'
(Other definitions for sedate that I've seen before include "Give calming drug to" , "Decorous" , "Give tranquilliser to" , "Leisurely" , "Dignified and sombre" .)