We are looking to place posts in "categories". We are using the concept of "posts" instead of pages, so the newest posts, (similar layout as news articles) would appear on the front or home page.
We have tried using tags as well as creating new content, but so far we have been unable to create a menu link that would allow a user to click on drop down menu name containing sub links, or even multiple root menu names that simply goes to a url with a trailing slash that would display links to thousands of posts for each category.
We use this technique on dozens of other programs, but we have not figured out how to accomplish it in backdrop yet, so if anyone can guide us in the right area, it would be greatly appreciated.
Do you have any taxonomy vocabularies set up and added to the Post type as fields? (e.g. Category or Tags, for example) If so, the type of page you describe is created automatically -- the taxonomy term landing page.