Using the blank template that comes standard in your Emma account, there isn’t going to be a way to create those styles. There are a few default header text styles coded into that template that you can use to apply consistently-styled headlines and subheadings, or create a quote block for a chunk of text that needs to stand out from the rest of your copy, but you won’t be able to add your own styles within the editor.
If you’d like to have a custom template set up with your specific text styles added, you may want to submit that request to our design team. That’s most definitely something they can code to meet your specific needs! If you’d like to go that route, please submit our online design form, and you’ll hear back from a member of that time on cost and turnaround time.