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

1. **Identify and Document Key Processes**: Clearly identify and document the key processes essential for quality management. This includes defining roles, responsibilities, and objectives.

2. **Structure and Clarity**: Develop a consistent structure for your documents, typically including the purpose, scope, users, reference documents, process explanation, and records.

3. **Alignment with ISO 9001 Standards**: Ensure that all procedures and processes align with ISO 9001 standards and are designed to achieve quality objectives while satisfying customers.

4. **Employee Training**: Train employees on the documented procedures to ensure they understand and can effectively implement them.

5. **Monitor and Measure Performance**: Regularly monitor and measure performance, using audits to assess compliance and effectiveness.

6. **Continuous Improvement**: Establish a continuous improvement cycle, encouraging feedback and making necessary adjustments to the processes and procedures.

7. **Documentation of Non-Mandatory Procedures**: While some documents are not mandatory, consider documenting complex tasks, areas with high staff rotation, or where performance issues have been identified.

8. **Engage Leadership**: Ensure leadership is engaged in driving the QMS and that it aligns with business goals.

9. **Traceability and Consistency**: Document everything, including process flows, work instructions, and records, to ensure traceability and consistency across the organization.