Men are prepared to change handle (6)
I believe the answer is:
rename
'change handle' is the definition.
The answer and definition can be both to do with communicating as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?
'men are prepared' is the wordplay.
'prepared' indicates anagramming the letters.
'men'+'are'='menare'
'menare' anagrammed gives 'RENAME'.
'to' is the link.
Can you help me to learn more?
(Other definitions for rename that I've seen before include "Confer new appellation of meaner sort" , "Give a new title to" , "Alter title of" , "Meaner (anag.)" , "Brand again" .)