Hello @ChuckGreen ,
You'll need to copy the universal code available on Sign up forms page, then paste that into your website's coding. If you have an inline form, you'll also need to grab its specific inline coding.
I'd recommend following along with this article for the various steps to this. The article also has a slew of standard website builders, and how to install the forms in those builders' coders. If a builder doesn't allow outside coding, the article will state so.
Create inline form
Create pop-up form
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