Here are some steps you can take to stop your dog from barking at people:

1. Train your dog to "speak" on cue. This way, you can teach them to be quiet on command. You can use the command "hush" or "quiet" when they start barking.

2. Remove the distraction that's causing your dog to bark. If your dog is barking at people outside, you can close the curtains or blinds so they can't see outside.

3. Increase your dog's exercise and playtime. A tired dog is less likely to bark excessively.

4. Keep a consistent daily schedule for your dog. This will help them feel more secure and less anxious, which can reduce barking.

5. Provide mental stimulation with puzzle toys or treat-dispensing toys. This will keep your dog occupied and less likely to bark out of boredom.

6. Try leaving music or a TV show on when your dog is home alone to create white noise that can help mask outside noises that might trigger barking.

I hope these tips help! Let me know if you have any other questions.