If this will be an email sequence, you would decide the flow of that sequence using rules or filters; You can do this using Automations or rules. You can determine who will receive the emails you would like to send it. I recommend you look closely into these links and the other relevant automation links:
How to Automatically Tag Subscribers3
How To Begin A Visual Automation1
If you're having some trouble with this, I recommend you email email@example.com to take a look at your account.