To document processes and procedures in an ISO 9001 compliant QMS, follow these best practices:

1. **Identify Key Processes**: Determine the essential processes needed for the QMS and their application throughout the organization.

2. **Define Roles and Responsibilities**: Clearly outline who is responsible for each process and what their roles entail.

3. **Establish Clear Objectives**: Set clear objectives for each process to ensure alignment with quality management goals.

4. **Document Procedures and Work Instructions**: While not all procedures and work instructions are mandatory, document those that are necessary for effective operation and control, especially for complex tasks or where nonconformities might arise.

5. **Ensure Consistency and Traceability**: Document process flows, work instructions, and records to maintain consistency and traceability.

6. **Engage Leadership**: Involve leadership to drive the QMS and ensure it aligns with business goals.

7. **Monitor and Measure Performance**: Implement processes for monitoring, measurement, and performance evaluation, using audits to assess compliance.

8. **Encourage Continuous Improvement**: Establish a continuous improvement cycle, encouraging feedback and making necessary adjustments.

9. **Use a Structured Format**: Develop a structure for procedures that includes the purpose, scope, users, reference documents, process explanation, and records.

10. **Tailor Documentation to Your Organization**: Customize the documentation style to suit your organization and the employees who will execute the processes.

By following these practices, you can ensure that your QMS documentation is effective and compliant with ISO 9001 standards.