Select Numeration Type
By adding the numeration attribute, you can adjust the numeration type for the ordered list. You can choose between:
arabic1, 2, 3 (default)upperalphaA, B, Cloweralphaa, b, cupperromanI, II, IIIlowerromani, ii, iii
Select the ordered list in the Element Structure Menu

Select Go to element.
Add the
numerationattribute in the Element Attributes Panel.Select desired numeration type from the menu.

Select Save.