To create a second account, you'll be using Multiple Accounts to clone that app. Once it's cloned, you can enter the app and create a whole new account for yourself! Just follow these steps:

1. Install Multiple Accounts

2. Tap the '+' button inside the Multiple Accounts app, in the top-right corner

3. Select any app in which you'd like to create a second account

4. The icon for this app will now appear on the main page of Multiple Accounts

5. Tap the new app icon in Multiple Accounts; this will launch a new instance of the app and allow you to create a second account!