Dear Natarajan Subramanian Dr S Have a look here https://help.researchgate.net/hc/en-us/articles/14293005132305-How-to-add-research
Best regards. PS. I saw that you uploaded already one paper. One tip: upload the pdf version, this is the preferred way and enables the RG 'search engine' to recognise the references etc. (In Word go to 'save as' and choose pdf).