Charles initially got everybody to visit (4)
I believe the answer is:
call
'to visit' is the definition.
('call' can be a synonym of 'visit')
'charles initially got everybody' is the wordplay.
'initially' indicates taking the first letters.
'got' is a charade indicator (letters next to each other).
'everybody' becomes 'all' (all people).
The initial letter of 'charles' is 'c'.
'c'+'all'='CALL'
(Other definitions for call that I've seen before include "Entitle" , "Summon; shout" , "Visit; shout" , "Summon - visit" , "Shout - name" .)