The role of a Company Secretary in a Private Limited Company, supported by a Private Limited Company Registration Consultant, includes:

1. Compliance Management: Ensuring the company meets all legal and regulatory requirements. 

2. Board Meetings: Organizing and documenting board meetings, including agendas and minutes.

3. Liaison: Acting as a bridge between the board, shareholders, and regulatory authorities.

4. Legal Advisory: Providing guidance on corporate governance and legal matters.

5. Document Management: Handling key company documents, like the Memorandum and Articles of Association.

6. Record Keeping: Maintaining essential company registers and records.

With the help of a Private Limited Company Registration Consultant, the Company Secretary ensures smooth operations and compliance.