private Component buildMainPanel() {
		JPanel panel = new JPanel(new BorderLayout());
		panel.add(buildBasicInfoPanel(), BorderLayout.NORTH);
		panel.add(buildPermissionsPanel(), BorderLayout.CENTER);
		panel.add(buildTypesPanel(), BorderLayout.SOUTH);

		return panel;
	}
Define the Main panel for the dialog here.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/memory/AddBlockDialog.java