How to deselect cells from selected ranges in Excel

Hello,

I am sad to hear that the possibillity of double selecting cels has dissapeared.

I often use that for calculating Sums or Averages in Situations as you see below.

I first select the cels B2:E6, F2:I6, B7:E11, F7:I11 and then over that selection I select B2:J12.

Then I use the Sum (or Average) button and in all the empty cells the Sum Or Average is calculate in the correct way.

This is now impossible. Now I have to do this in steps, as the latest selection B2:J12 deselects the previous selections.

It would be great if it would stil be possible to double select cells.

I must say that in certain situations the new way is handy. But I really miss the old possibillity certainly in sheets that are bigger than this example.