Below is a detailed guide to the process: 

Check Articles of Association (AOA): Review the company's Articles of Association to ensure compliance with any specific provisions regarding the addition of members.

Convene Board Meeting: Convene a meeting of the Board of Directors to propose the addition of members to the company. Prepare and circulate the agenda along with necessary documents to the board members in advance of the meeting.

Pass Board Resolution: During the board meeting, discuss and approve the proposal for adding members to the company. Pass a resolution by a majority vote of the directors present and voting. Specify the details of the proposed addition of members, including the number of members to be added and any related matters.

Issue Offer Letter/Invitation: Prepare and issue offer letters or invitations to individuals or entities who wish to become members of the company. Ensure that the offer letters contain all necessary details, including the terms and conditions of membership, rights and obligations, and any applicable subscription fees or share prices.

Receive Acceptance: Receive acceptance from the individuals or entities who have been offered membership. Ensure that the acceptance is received within the stipulated time frame as mentioned in the offer letters.

File Form INC-22: Within 30 days of receipt of acceptance from the new members, file Form INC-22 with the Registrar of Companies (RoC) to intimate them about the addition of members to the company. Attach the necessary documents, including the board resolution authorizing the addition of members and the list of new members. Pay the prescribed filing fee.

Update Register of Members: Update the Register of Members maintained by the company to reflect the addition of new members. Ensure compliance with the requirements of Section 88 of the Companies Act, 2013, regarding maintenance of registers.

Update Other Records: Update other relevant records and documents, including the Share Certificate, Register of Members, and any agreements or contracts, to reflect the addition of new members.

Compliance with Disclosure Requirements: Ensure compliance with any additional disclosure requirements applicable to the addition of members, such as those related to related party transactions or disclosure in financial statements.

By following these steps and adhering to the requirements of the Companies Act, 2013, a company can successfully add members. It's essential to maintain proper documentation and ensure timely compliance with all legal and regulatory obligations.