Attesting POA apostilled bt SOS of my state

I am of Indian ancestry USA citizen. I need to give my POA to my cousin in India. I have the document apostilled by the OH SOS. I think my Indian counselor office is the embassy in Washington DC. What are the steps for me to have the POA attested by the embassy?
Reading through all the strings only confuse me. As a US citizen, what specifically should I do?
Do you provide the necessary services?
Thank you very much.

Get it attested by Indian embassy by mail.