workflow - How to have facebook messenger bot in local, staging and production -

context

i'm working on facebook messenger bot , have workflow issue.

to create used ngrok make facebook test application hook on local , worked fine.

now bot in staging test , other application have webhook pointing stage server.

for production server intend production application have webhook pointing on it.

question

but since application has attached page start conversation it, how can test several bots ? need 3 pages (local test, staging test , production) ?

or there facebook way ? (test version of app not working on messenger bot, known bug)

or maybe practice ?

docs on seem non-existent. seem need separate pages , bots test/staging environments.

here's did the bot made.

1. make test/staging pages.
2. unpublish pages they're not publicly searchable.
3. give testers/devs page roles on page can search , find it.
4. give same testers/devs roles in bot dashboard can chat bot.