The Clear All button at the bottom of each column can be used to clear all check marks in the column, set them all or reset them their original values. Each time the button is clicked its title will cycle through Clear All, Set All and Reset.
Because Counter fields are always automatically generated and cannot be changed, the Auto Fill In and Field Lock check boxes for these field types are always checked and cannot be unchecked.
Note that the lists of preset values will not be cleared, just whether or not they are used.