agree on something *
agree upon something

I'd never seen so many of them agree on something before.

The three of them agree on one thing above all.

But even those who have worked together do not agree on all points.

Before they can agree on anything, another car shows up.

But in the end the design board could not agree on any plan.

They have a son, but cannot agree on a name.

At least we agree on the last 30+ of government policy.

With some guys you're not going to be able to agree on everything.

Any thinking person I think would agree on all three.

"Have you ever tried to get three people to agree on anything?"