Once you have a project open you can create a new app page by clicking on the plus button on the right of the "PAGES" section right below the project title on the upper left corner of the platform:
The plus button opens the "New Page" dialog box where we need to provide the name of the page. We will name this one "Question".
Press the "CREATE" button and an empty page will be created, added to the project and displayed in the "Pages" list under the project title on the upper left side of the platform:
To open the page, you only need to click on its name. When you have more that one page in your project, this is the way to navigate through them: by clicking on their name in the "PAGES" list. Once a page is open its name appears at the top of the main area of the platform and its canvas (the white area) is available for defining or changing its layout:
The next step is to define the basic layout of our page.