It's absolutely right to get together (4)
I believe the answer is:
meet
This clue is a double definition.
'it's absolutely right' is the first definition.
(meet can mean appropriate or proper)
'get together' is the second definition.
(meeting is a kind of getting together)
'to' acts as a link.
(Other definitions for meet that I've seen before include "See 24" , "Come face to face - it is fitting" , "Join" , "Hunting gathering" , "Appropriate" .)