Try to accommodate all showing requests, provided they are at a reasonable time, with reasonable notice given.
Arrange for pets to be elsewhere when your home is being shown.
Add to the ambience and make a welcoming impression by leaving all the lights on, lighting the fireplace, and playing soft background music.
The best thing that you can do to have a successful showing is to not be present. You’ll get better results when your visitors feel free to poke about, linger, and ask very direct questions of their Agent.