With multiple symbols selected you can change the defaults for new symbols by using the check boxes. If the selected symbols have conflicting states then a checkbox appears like this
, which means an indeterminate state. It can still be cycled to ticked or unticked. When
OK is pressed, only the settings appropriate to each symbol type are changed and only the non-indeterminate states are saved. The selection changes to reflect which symbols were used to update the defaults. The most recent selection for each symbol type is used.