Updated instructions on WordPress integration

My hosting provider, DreamHost, installed WordPress on my website, but I would like to use Builder.io to design the pages and fill them with content. I’ve read the document Using Builder on Your WordPress Website, but I can’t apply these instructions because in order to create a page containing the HTML code to copy/paste, I’m told that I first must have a developer integrate.

Also, as @frankopazo mentioned in this thread, that guide is several years old. Now, there is no WordPress tab when grabbing the iFrame code.

How do I integrate in order to start utilizing the editor in Builder.io? Then, how do I copy the HTML code and paste it into my WordPress site? Does Builder.io work with DreamHost, so I could spare the additional step?