Shrink textures.

[ShadowCoder]

Hello title explains it a little. How am I able to shrink textures in GTKradiant? An example of how I want it is so a box isn't so large. I would like to have a small box using the same texture but I have no clue on how to shrink the texture to match the smaller size of the box.

How am I able to do this?

Thanks in advance 

[UniqPhoeniX]

Press 's' to open surface inspector.

[Plague Bringer]

Press 's' to open surface inspector.

Then press buttons.