Set up your human and dog Decoy Team (on leash) at the furthest point from your starting point. They can practice tricks or whatever they like as they wait, as long as they are not overly exciting and enticing to your dog. If the decoy dog is also a frustrated greeter, this will not work! This dog must be relaxed and friendly toward your dog.
You will start out at a distance where your dog notices the decoy team but isn’t barking and fussing. If your dog is barking and fussing, you’re too close. Back up 5 feet and continue backing up until you have a dog that notices without barking and fussing. This is your starting point.
This is a great place to play the Look at That game for a moment, in order to reduce excitement and increase focus on you, passively.