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, typically 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 necessary records and supporting process operations.

6. **Incorporate Feedback and Continuous Improvement**: Regularly review and update documents based on feedback and performance evaluations to ensure they remain relevant and effective.

7. **Engage Leadership and Staff**: Involve leadership in driving the QMS and ensure staff are trained and understand the documented procedures.

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

By following these practices, you can create a robust documentation system that supports the effective implementation and maintenance of your QMS.