NGOs that are accredited to and in good standing with the Economic and Social Council (ECOSOC) contribute to the annual sessions of the CSW. 

What is ECOSOC accreditation?

Non-governmental, non-profit, public or voluntary organizations may formally contribute to the work of the United Nations after being granted consultative status with the Economic and Social Council under Article 71 of the Charter of the United Nations and on Economic and Social Council Resolution 1996/31. These accredited organizations may participate in meetings of the Council and its subsidiary bodies, including the functional commissions, in accordance with the rules of procedure of those bodies.

For information on how to apply for ECOSOC accreditation, please visit the website of the NGO Branch of the United Nations Department for Economic and Social Affairs (DESA) at https://ecosoc.un.org/en/ngo .