1
Click on Checkout, then click on Edit Apparence.

2
Under Appearance, you can choose between a one-page or multi-page checkout.

3
Click on Save changes.
You can chose the type of your checkout by clicking on the Checkout tab in the menu of your Admin panel of the selected store.
Click on Checkout, then click on Edit Apparence.

Under Appearance, you can choose between a one-page or multi-page checkout.

Click on Save changes.