A blank page can have no controls at all or you could choose a template for your page from the list of template/sample pages that get displayed when you create a blank page.

If your required template is not available in the list, you could select a blank template and go ahead with building your page from scratch.

Each control could be imported to your page using the drag-drop feature and appropriate customization could be done in the 'Properties' dialog box which appears specifically to the control you have brought to your screen or that is selected.

Templates provide predefined pages of certain fields and styles which you could modify according to your choice instead of starting from scratch.