Crossword Genius

The custom is two men at a time (9)

Ross

I believe the answer is:

patronage

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'the custom' is the definition.
(I've seen this before)

'two men at a time' is the wordplay.
'two men at' becomes 'patron' (I am not sure about this - if you are sure you should believe this answer much more).
'a time' becomes 'age' (an age is a period of time).
'patron'+'age'='PATRONAGE'

'is' acts as a link.

Can you help me to learn more?

(Other definitions for patronage that I've seen before include "The power to control privileges" , "custom in restaurant?" , "Sponsorship - condescending manner" , "financial backing" , "supporting role" .)

I've seen this clue in The Globe and Mail.
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