A Layout represents the look and feel of your app. It includes all your app's screens, navigation configuration and your design cell styles. You can set a single layout for multiple versions as well as multiple platforms at the same time. You can also change layouts remotely and can test them on your real apps before publishing them to all your end users.
Create new layout
Open the studio, and press on “layouts” (top left corner). A modal screen will pop-up.
In the modal screen, select “add layout”.
Enter a name for your layout and select the target: mobile, TV, Roku or Tablet only.
Press “add layout” and you will be redirected to a new layout screen.
Assign a layout to a version
In the drop down menu of the relevant version, click on "General"
Go to “Active layout”, select the relevant layout, and save the changes.