The content type controls the slide designs that will be available to choose from. Change the content type to get the slide design you want.
Go to the “Block” section in the control panel to the right of the text
In the section Content Type, click on the content type you want to change to
The content types you can choose from are:
Paragraph (slides that drive your story forward)
Header (the title of your story)
Quote
Call out (for words you want to emphasize)
Bullet list
Numeric list
Tips:
If you can’t change the content type you would like to have, check so your “Slide type” is unlocked (see the lock icon)
If you want to assign different parts of your text to different content types, hit Enter twice to create a new block