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

1. **Identify Key Processes**: Determine the essential processes for quality management and document them thoroughly.

2. **Define Roles and Responsibilities**: Clearly outline who is responsible for each process and procedure.

3. **Use a Consistent Structure**: Develop a standard format for documents, including purpose, scope, users, reference documents, process explanation, and records.

4. **Ensure Clarity and Simplicity**: Write procedures in a way that is easy to understand and follow, avoiding unnecessary complexity.

5. **Align with ISO 9001 Requirements**: Ensure that the documentation meets the requirements of ISO 9001, including maintaining and retaining necessary documented information.

6. **Incorporate Feedback and Continuous Improvement**: Regularly review and update documents based on feedback and performance evaluations.

7. **Train Employees**: Ensure that all employees are trained on the documented procedures and understand their importance.

8. **Monitor and Audit**: Implement processes for monitoring, measurement, and performance evaluation to ensure compliance and effectiveness.

9. **Engage Leadership**: Involve leadership in driving the QMS and ensuring alignment with business goals.

10. **Document Only What is Necessary**: Focus on documenting activities specific to the process where nonconformities can emerge, rather than common knowledge tasks.