Adding (Multiple) Widgets
You can add one widget above or below the clock (To add one, long-press Niagara's agenda widget/clock at the top and tap on Add custom widget). If you want to have multiple widgets, you can attach widgets to pop-ups with Niagara Pro. Each app can have a pop-up, and you can also attach two pop-ups to the Niagara button. See this article on how to create pop-ups. After creating a pop-up, open and long-press on it and select Edit [App/Folder] pop-up. Then, either suggested widgets will appear at the top of the selection list, or you have to scroll all the way down and tap on Select a widget.
What about a widget page?
We are not fans of widget pages. The only thing widgets have in common is that they're all widgets. So why should they be grouped? Showing a weather widget below the clock and accessing your calendar agenda via a swipe / by tapping on a button makes more sense. Also, widgets often tend to use much memory. The concept of a widget list would kind of endorse users to cluster the page full of widgets. In contrast, a pop-up shows only a single widget at once, so not every widget has to be loaded into ram when you want to access one.
What about a widget stack?
We decided to have another look at stackable widgets as we feel like right now, this is the most "Niagara-feeling" option to support multiple widgets on the home screen. You can participate in the widget stacks discussion on our issue tracker on GitHub.