@trevor said in Sum of Data Points in a Data Source:

Is there a way to import/export Menu Items and Custom Pages as JSON files? Or is there a way to find them in the file structure so I can build them outside of the app? This is going to end up being a fairly sizeable installation and I'm hoping to avoid adding/sorting/copying them by hand one at a time.

The pages and menu items are stored in the JSON store. So if you go to the Configuration Import/Export page you can export the JSON store items there.

Another option is to add a user module that registers menu items and loads the pages from the file store.