Creating a page(panel) is possible by adding it's name and clicking on the "Add panel" button.
Changing the name of selected panel is possible by clicking on the button"Edit" in the Menu, followed by clicking on "Edit Node".
Removing selected panel is done by clicking the "Remove" button.
Copying or cutting selected panel to another installer is done by clicking on "Edit" in Menu, followed by "Copy", "Cut" or "Paste".