Make beloved stop with 'Attention!' (6)
I believe the answer is:
endear
'make beloved' is the definition.
(I've seen this before)
'stop with attention' is the wordplay.
'stop' becomes 'end' ('end' can be a synonym of 'stop'**).
'with' is a charade indicator (letters next to each other).
'attention' becomes 'ear' (ear is a kind of attention).
'end'+'ear'='ENDEAR'
(Other definitions for endear that I've seen before include "Evoke love - charm" , "Inspire affection" , "Neared in order to charm" , "ingratiate" , "Cause to like" .)