RE: Automating your Facebook presence using a Facebook bot

When you connect your bot to Facebook you can enter the name of your Facebook page to connect it to in the Facebook properties.

If your bot is already connected to a profile, or another page, then first click on "Disconnect", enter the new page, and click on "Connect".

For you bot to be able to respond to page messages, and use Facebook Messenger you also need to create your own Facebook App.
See, https://www.botlibre.com/forum-post?id=12742773