Bags going vertical

[enderwiggin01]

I just found the Bag Options click able thing when I had a box open, and I right clicked it, and it gave me a Bag Options area.

When I clicked on it to see what would happen, it made my huge box go vertical, and stack the 32 slots, 1 on top of another. How can I reset it, or change it back, so it is 4 across by 8 down? I tried moving it to another slot, but it just changes whatever box is in my first slot, to all vertical. Any help is appreciated. Thanks.

Calhan of Antonia Bayle.