Is open to discussion with a trim man in the family (6)
I believe the answer is:
agenda
'family' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for agenda that I've seen before include "List of items to be dealt with" , "Meeting's topics" , "List of items for discussion at a meeting" , "Individual objective(s)" , "things still to be done" .)