Manage to attend party (4,2)
I believe the answer is:
make do
'manage' is the definition.
(thesaurus)
'attend party' is the wordplay.
'attend' becomes 'make'.
'party' becomes 'do' (do is a kind of party).
'make'+'do'='MAKE DO'
'to' acts as a link.
(Other definitions for make do that I've seen before include "Cope" , "Manage (with inferior resources)" , "not expect better facilities" , "Manage somehow" , "attend function" .)