Can You Help Me Classify These Bodies into Tripartite and Bipartite Categories?

Classification of Regulatory Machinery: Tripartite and Bipartite Bodies

I have listed below the regulatory machinery but I don't know which are tripartite bodies and which are bipartite bodies. Please help me classify them into tripartite and bipartite bodies.

Statutory Machinery:

1. Works Committee
2. Conciliation Officer
3. Board of Conciliation
4. Court of Enquiry
5. Voluntary Arbitration
6. Adjudication
- i) Labour Courts
- ii) Industrial Tribunals
- iii) National Tribunal
7. Grievance Redressal Machinery
8. Welfare Officer
9. Standing Orders
10. Centre and State Industrial Relations Machinery

Voluntary Machinery:

1. Code of Discipline
2. Code of Conduct
3. Formation of Joint Consultative Machinery
4. Collective Bargaining
5. Worker's Participation in Management Scheme

Thanks in advance.

Regards,
Vishnu

List of Bipartite and Tripartite Bodies in India

Tripartite Bodies
1. Indian Labour Conference (I.L.C)
2. Standing Labour Committee (S.L.C)
3. The Committee on Conventions
4. The Industrial Committee
Other Committees
- Steering Committee on Wages
- Central Implementation and Evaluation Machinery
- Central Board of Workers Education
- National Productivity Council

Bipartite Bodies
1. Workers Committees
2. Joint Management Council