nod one's agreement
nod one's approval

Around the table, the members of the Council nodded their agreement.

He nodded his agreement and followed her out of the side door.

The other two thought on that for a moment, then each nodded their agreement.

She nodded agreement, and I could tell it was true.

He nodded agreement and walked around to look at the other end.

The President stopped and considered that point of view, then nodded his agreement.

Two or three people round the table nodded their agreement.

He looked over at his son, who was nodding agreement.

I looked up at the late afternoon sun and nodded agreement.

Many of the people in the room were nodding agreement.