Arrange a meeting with Charlie about working with Victor (7)
I believe the answer is:
convoke
'arrange a meeting' is the definition.
I can't tell whether this defines the answer.
'charlie about working with victor' is the wordplay.
'charlie' becomes 'coke' (I can't justify this - if you can you should give a lot more credence to this answer).
'about' is an insertion indicator.
'working' becomes 'on' (on can mean working or activated).
'with' is a charade indicator (letters next to each other).
'victor' becomes 'V' (phonetic alphabet: alpha, bravo, charlie etc.).
'on'+'v'='onv'
'coke' placed around 'onv' is 'CONVOKE'.
'with' is the link.
Can you help me to learn more?
(Other definitions for convoke that I've seen before include "Call together" , "Gather" .)