If you hope all your settings can be applied to all documents,please do the following:
For Foxit PhantomPDF versions prior to V10
You must keep the option “Save As default (If you uncheck this, your settings will be effective for this document only.)" checked. If you uncheck it, your settings will be effective for the currentDocument only.
For Foxit PhantomPDF v10 and later
Since Foxit PhantomPDF v10,the Save As Default check box on the properties dialog of Foxit PhantomPDF Printer is removed, and the default printer setting is not like V9.x and earlier versions.Click here to know how to set the default properties of the Foxit PhantomPDF Printer in PhantomPDF V10.0 and above to make the settings to be reused for generating PDF documents.