Hi Frances! Change the charter (9)
I believe the answer is:
franchise
'the charter' is the definition.
(thesaurus)
'hi frances change' is the wordplay.
'change' indicates anagramming the letters.
'hi'+'frances'='hifrances'
'hifrances' is an anagram of 'FRANCHISE'.
(Other definitions for franchise that I've seen before include "The right to vote in a parliamentary election." , "For citizen, right" , "suffrage" , "Commercial agreement giving marketing rights" , "rights of citizenship" .)