Thanks for reaching out to the Community, need memory.
You can customize which customers are displayed on a Customer Contact Report while using the classic view.
Here's how:
- In your left navigation bar, go to Reports.
- Enter "Customer Contact List" in the Find report by name field.
- Click Customer Contact List from your drop-down list.
- Hit Switch to classic view.
- Press Customize.
- Use the Filter drop-down and choose Customer.
- From your Customer drop-down, specify which customers you want displayed on the report.
- Select Run report.
I've also included a detailed resource about working with reports which may come in handy moving forward: Run reports
If there's any additional questions, I'm just a post away. Have a lovely Tuesday!