GGU-PLATELOAD: "Deformation modulus" menu item
Almost exactly the same dialog box opens with the same preference options as that described in the "Output preferences/Title (change position)" menu item. Simply proceed as described there to edit the "Deformation modulus" element.
The value a0 should be given in the evaluation of your plate loading test in compliance with DIN 18134. After double-clicking the "Deformation modulus" element a dialog box opens allowing activation of the "Enter a0 in table" check box.