Add an account to a Windows 8 app
How to add accounts to your Windows 8 applications
Here's how you can add accounts to your Windows 8 applications.
1. Make sure you have a Microsoft account set up already.
2. Open the Settings charm in the app.
3. Tap or click on Accounts.
4. Tap or click Add An Account.
5. Choose the type of account you want, then follow the instructions.
For more, see the original article at the link below.
Add an account to an app