Yes. You can add call to action buttons within your email sequence. Call to action buttons are best used to highlight a specific step you would like the reader to take.
How to add a call to action button
1. Place the cursor in your sequence where you would like to have the button show.
2. Click on the Button Icon from the edit tool bar
3. Add the Button Label and URL (do not need to add http or https).
GIF showing how to add a button.