One called on jockey to hold place (7)
I believe the answer is:
visitee
'one called' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'jockey to hold place' is the wordplay.
'jockey' becomes 'vie' (I've seen this before).
'to hold' is an insertion indicator.
'place' becomes 'site' (site is a kind of place).
'vie' placed around 'site' is 'VISITEE'.
'on' acts as a link.
Can you help me to learn more?
(Other definitions for visitee that I've seen before include "Host" , "entertainer?" .)