Go to CMS -> Page Type -> Actions button -> New Page Type
New content page form will appear. Fill the details and click on save.
To create structure, add section and widgets in section. You can add section within sections.
To add section, click on section -> Add.
Fill no. of columns and width of columns and click on Save.
To add three columns and set width of the columns.
You can see the page structure in the right side also. It showing child and parent relationship in structure. If you click on any node in page structure, it will reflect on form in red color.
After adding sections, you can add widgets.
To add widgets, click on add and choose the widget you want to add.
After adding widget, click on Save button on form.
To remove widget, click on cross icon and remove section, click on section -> remove.
List
Go to CMS -> Pages Type. List will appear.
Edit
To edit Pages Type, right click on Pages Type and select edit Page Type.