Press the Common button, it's also used to select drumkits in voice mode and favorites in category search. Notice the black line that runs from Common to Element/Part/Zone to indicate that these are the two groups of buttons that are related.

In Edit, The Common button selects parameters common to the whole Voice, Performance, or Mix and the Number Buttons select the building block for that mode - the Element in a Voice, the Part in a Performance and Mix, the Zone in Master Zone.