creating new style is no longer possible?

creating new style is no longer possible?

I have looked through the documentation and the forum discussions for instruction on how to create a new style. Everything I found so far refers to a "styles" button – the screenshots seem to be from the old user interface, when the various buttons were at the top. In the new user interface I cannot find any such button. I tried selecting some text and then choosing "customize" from the menu of paragraph styles, but this brings up the "Document Design" dialog, which I am pretty sure is not right.

What am I missing?

Thanks in advance for your attention.
Tom