About to get promoted within institution hosting company on that account (7)
I believe the answer is:
thereat
'on that account' is the definition.
(I've seen this in another clue)
'about to get promoted within institution hosting company' is the wordplay.
I cannot really understand how this works, but
'about' could be 'rea' (I've seen this in other clues) and 'rea' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for thereat that I've seen before include "On account of that" , "At that point" , "Theatre (anag)" , "At that place" .)