How can i have a single sign on with three companies
Welcome to the Community, @mikem3. It's my pleasure to be your QuickBooks guide today.
I've got you some easy peasy steps on setting up a single sign-on for your three QuickBooks Online company. First off, you'll need to decide which email you'd like to use for all your companies. Let's call this email A, and the rest is B and C.
Next is you sign in to your QuickBooks company that you access with email B and C. Then, invite email A to the company and assign it as the Company Admin. Here's how:
Go to the Settings menu, then click Manage Users.
Select Add user, then choose Company Admin as the user type.
Enter the required details of your new user, then select Save.