Idea

- Users collection
	- Document registered user 001
		- Inside document has field (UserId, email, address, etc)



- Category collection
	- Every document belongs to user registered
		- Inside document has field (UserId, status)
		- How to create/insert collection of Menu inside here? How is logic or structure?

So if I login into my app, I can get all list of category menu available based on who is logged in.
If I login with ID 001, I get all list category menu inside my app. Depends on who is logged in.
That's my idea