For the time being it works like that .. The first update which one would like to mark by clicking, then Shift key, now the last update in the column, which you want to highlight by holding the Shift key by clicking. All between the first and last are now marked. All individual in between which one now wants to deselect now by holding the CTRL key and deselect. Now set the checkbox to any marked update and automatically the checkmark will be set for all previously marked ones. Actually an ancient keyboard function.