I want to send out an email campaign, that links to a landing page, that holds a form, that when filled, feeds into the CRM as a lead, and associates it against a campaign in Zoho Marketing Hub. Once the first email is triggered, after some days, I want to trigger another automatic email to the same lead, which is sent to the user once an action is complete from our(website) end. 

I want to build all of this within marketing hub, how can I do it?