play by somebody’s (own) rules
idiomPart ofrule
play by somebody’s (own) rules — idiom
1. To accept and follow the conditions set by another person in a situation.
1.idiom
Definition
To accept and follow the conditions set by another person in a situation.
Example
If you want to join the club, you must play by their rules.
Brian refused to play by the manager's rules and left the company.