I'm given role to communicate (6)
I believe the answer is:
impart
'communicate' is the definition.
(imparting is a kind of communicating)
'i'm given role' is the wordplay.
'given' is a charade indicator (letters next to each other).
'role' becomes 'part' ('part' can be a synonym of 'role').
'im'+'part'='IMPART'
'to' is the link.
(Other definitions for impart that I've seen before include "Reveal, make information known" , "Give - convey" , "Reveal about armpit" , "17 down (anag)" , "Divulge, inform" .)