Expect the Unexpected

[nukewhistle]

My trail umpire partner calls a "T" on Team A's head coach. The technical is administered and play resumes to team A's bench area and the ball goes OOB on my sideline. Team B's ball.The head coach gets up and I warn him that he has lost his privilege to stand up and he must be seated. No 10-4-4c,d,etc. My partner comes over and tells me that the coach can still have the coaching box privilege.I inform him at halftime that you can't make up rules but he refuse to acknowledge using the excuse of it's pre-season,etc. I decided not to escalate the issue as I had to ref another half with him. Anyhow I never expected this! How should I address this to my association etc?