How to sync with two users?

Hello accounts-mirabel.

Glad to have you reach out to the Community. I'd be happy to give you a hand with managing your users. QuickBooks is an easy-to-navigate program that makes it simple to stay organized. 

I'd like to make sure we're both on the same page, could you elaborate on why you'd like to sync with two users? If you're referring to adding new users, I encourage you to check out this article here which shows you how. The article also shows you how to manage users in QuickBooks Online. 

Feel free to share more details on what you'd like to accomplish. I'll be one message away.