When using facebook apps like chatfuel and manychat (which are bot creation platforms), these apps request permissions that allow them to manage my pages and send messages.
I want to create a similar app that allows users to send messages from their pages through my app, but I can't find how to request such permissions in Facebook's documentation.
You need to be given the administrator role for each Page, then connect your app to the Page and generate a page-scoped token for each one.