Magnificent group, as an example, needs leader to accept point (6)
I believe the answer is:
heptad
'magnificent group as an example' is the definition.
(group of seven, e.g MAgnificent Seven)
'leader to accept point' is the wordplay.
'leader' becomes 'head' (head is a kind of leader).
'to accept' is an insertion indicator.
'point' becomes 'pt' (abbreviation for point).
'head' going around 'pt' is 'HEPTAD'.
'needs' is the link.
(Other definitions for heptad that I've seen before include "Pleiades, for example" , "awful pet had" , "A series or group of seven" , "Set of seven" , "A seven-strong group" .)