This is probably a stupid question, but I can't seem to figure it out so I'm asking anyway. I used a landing page template to create my first landing page. It has a form embedded in it already. What I can't figure out is how to tag the people who enter their information into the form so that I can target them with subsequent emails. I've completed the form twice myself and I have to go back into subscribers to add the tag both times. What am I missing? I also tried to create a form, but I didn't come across any way to tag a user who completes the form, should I use it on my site.