Docx->pdf with watermark and protection?

https://www.convertapi.com/pdf-to-watermark
https://www.convertapi.com/pdf-to-protect

https://www.convertapi.com/a/api/docx-to-pdf#snippet=php

So I need to take a docx and convert it to PDF with a watermark AND protection

ConvertApi seems to have the best results for us on the conversion demo page, but then how does this work with the API, do I call 1 endpoint to convert, then send it back for watermark, then send THAT back again for protection?

I kinda want 1 call for all 3 like nutrient.io (but their conversion results aren't as good as yours)

How does this work?