How to make a new selection over a current selection that does not overwrite the current selection?

[#1]

Problem 1:

I have 2 fields and 1 expression in a straight table:

ProductID     Colour     sum(Price)

1                    Blue        $15.80

2                    Red         $16.00

3                    Yellow     $12.50

4                    Yellow     $10.20

5                    Green     $10.00

6                    Blue        $20.80

7                    Blue        $15.00

8                    Yellow     $21.50

9                    Green     $12.20

10                  Red         $9.00

I make my first selection - Product 1,2,3.

Now, I want to make additional selections - Product 8,9,10 - on top of this. i.e.

My new net selections should be: Product 1,2,3,  8,9,10.

i.e. I want my previous selections (Product 1,2,3) to be preserved and not overwritten when I make my new selection (Product 8,9,10).

How can I best do this?

Other information: I know bookmarks can preserve selections, but they seem to overwrite current selections in the fields that the bookmark has keep information on.

Problem 2:

Iis there a way to do multiple selections in a straight table just by clicking on the items (as opposed to selecting them from he drop-down list)?

Thank you for your help.

[rwunderlich]

Hold down the Ctrl key when making the second set of selections.

-Rob

[#3]

Thanks Rob.

This works in the drop-down list (at header of straight table), but not if I click items directly on the table.

Thanks anyway!

[rwunderlich]

Just curious. How can you select a new set of values from a straight table that already has selections? Wouldn't the table reflect only show the selected values? Or are you keeping them all exposed with a {1} set?

-Rob

[#5]

Yeah that's what I am trying to do, but am unable to. Because without holding Ctrl, the new selections overwrite the old ones instead of 'adding on' to the total selections.