Timetable: notice article containing information (6)
I believe the answer is:
agenda
'timetable' is the definition.
(I've seen this before)
'notice article containing information' is the wordplay.
'notice' becomes 'ad' (short for advert).
'article' becomes 'a' (the indefinite article in English).
'containing' means one lot of letters goes inside another.
'information' becomes 'gen' (gen can informally mean information).
'ad'+'a'='ada'
'ada' enclosing 'gen' is 'AGENDA'.
(Other definitions for agenda that I've seen before include "List of things to be done or discussed" , "things still to be done" , "things to discuss" , "Menu" , "Schedule of items for meeting" .)