1) Are we able to use a Web-To-Lead-Form to modify an existing Lead, rather than just creating duplicates? If so, how?
2) How would we specifically import a Tag from a Web-To-Lead-Form?
We already have a working WTLF that creates new leads from our website. However, we want to create a separate form that adds a Tag to a lead that already exists (or create a new lead if one doesn't exist, as it currently does). The specific use case for this is to track Webinar attendance via a sign-up form on our site.