Organizing a new subscription into folders

I imported 300+ feeds into BazQux by opml, with an extant folder structure.

When I hit ‘add subscription’ in the web GUI, how do I either: (a) assign the new feed to an extant folder; or (b) create a new folder or subfolder, and put the feed into it?

(I see I can do this in the News+ Android app, but would like to be able to do it on the BazQux GUI page.)

You could right-click on the feed and assign it to folder. Or use drag’n’drop. Or click on the “N New” button above articles, there will be folders menu too.

There’s a FAQ where you could find answers to some questions.