# Contact

- [Add a customer](/product-guides/master/contact/add-a-customer.md)
- [Edit the details of a customer](/product-guides/master/contact/edit-the-details-of-a-customer.md)
- [Delete a customer](/product-guides/master/contact/delete-a-customer.md)
- [Add a supplier](/product-guides/master/contact/add-a-supplier.md)
- [Delete a supplier](/product-guides/master/contact/delete-a-supplier.md)