It’s usual to make dad ringleader (3)
I believe the answer is:
par
'it's usual' is the definition.
'dad ringleader' is the wordplay.
'dad' becomes 'pa' ('pa' can be a synonym of 'dad').
'ringleader' becomes 'r' (first letter of ring).
'pa'+'r'='PAR'
'to make' is the link.
(Other definitions for par that I've seen before include "Median" , "Mean" , "Black music" , "Normal golfing score" , "Standard score for golfers" .)