In the Screen Styles management dialog you will find a list of the existing Screen Styles. You will also find the 'New' icon which you can use to create a new Screen Style step by step.

If you want to modify the attributes of a previously created Screen Style, select it using the mouse and then click on 'Next', or just simply double-click on it.

After you click on 'Next', you will be presented with a dialog in which you will have access to all the attributes of the Screen Style you are creating or editing.

Read More: