How do I stop the community manager posting off brand?

Stop it before anything is scheduled, with three examples that fit, three that do not, and the place’s tone in writing. Checking every caption after hours does not replace that sheet. Mark pieces of yours that can be repeated and pieces you do not want to see again. The manager improvises a joke you would not tell at the bar, and the customer reads it as another place. The tone sheet travels with the calendar and is used before a piece is queued.