guys in a hair salon one guy holding up one finger.
The man motions for the next customer to wait until his station is cleaned.
A guy can be in a hair salon holding up a finger can be a customer, an employee or just a friend, their position cannot be inferred.  A man in a salon can hold up a finger for many reasons, there is no reason to infer that he motions for the next customer to wait until his station is cleaned.
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