The Page Designer is accessed from within the Development Environment through Tools | Object Designer | Page. It can be opened either for creation of a new page by using the New button or for editing an existing page by highlighting the target object, then clicking the Design button.
New Page Wizard
When we click on the New button, or F3, or Edit | New, we bring up the New Page Wizard.
We can proceed to the Page Designer with the PageType property set to Card and no SourceTable defined by clicking on OK with Create blank page selected, and not entering a Table Name or Number. Or we could enter a Table Name or Number, select Create a page ...