The following guide will show you how to set it up so that after you send an email, you can perform certain trigger actions based on what they do. As an example, if there is a link such as open events in the email.
Whenever a Link Needs to be Clicked for the Next Step to be Initiated, set Action to "Email Event" (Wait For).
For If/Else Function, you can Select the Condition that will Add them to the Next Sequence once they Clicked or Not
For Branches
Under Segments > Events > Email Events
Under Operator > Is > Clicked