By clicking on any form, you will navigate to its editing view. Under the “Form Grid”, you can edit the added Field’s label or delete it if not required. 
Note: If you are editing the Form page, you cannot change the Module, Form Type, or cannot use the ready list (Use All). You can edit the fields of the module and its Layout.
You can change the position of the inserted Fields under the Form Grid. You can move the fields to change the position in the From Grid and you can also move the inserted fields to another Form Grid.
When you move the field to change the position- in between, top, or bottom, the other fields will adjust accordingly. 
You can preview the ‘Form’ by clicking on the Preview button; you can check the module layout. 
If you have selected another language, the details in the preview will be displayed in that language.