What does it mean - to make someone a concert? And its not about concert. Is it like to rebuke?

It's not the right word choice you have, but do you mean 'to make someone consent' [to something] ? That's not as strong a word as rebuke, but it does show that the two people are not thinking the same thing or that they don't have the same intention to start with....

That makes no sense.

Don't recognize the word. Casitgate or censure would mean rebuke.

I've never heard of that, it makes no sense. I think you're using the incorrect word.

It means nothing whatsoever!!!

Where did you see or hear this? It's either the wrong word or something said by someone who doesn't know English very well.

To be in concert with someone suggests a harmonious relationship. It has nothing to do with rebuke.