Add header and footer to docx file using group docx

I want to add header and footer to word documents. I was trying to figureout a way using Watermark familly but didn’t find a straight way. My requirment is to add, modify, delete the header and footer.

Which product group i should use.

Thanks

@darshan.yadav1 You can achieve this using Aspose.Words. Please see our documentation to learn how to work with headers/footers:
https://docs.aspose.com/words/net/working-with-headers-and-footers/

Also, please see the following link to learn how to work with watermarks in MS Word documents:
https://docs.aspose.com/words/net/working-with-watermark/