How can I change Stencyl's screen proportions?

Hi all! I dont really know how to say it XD. Look at the image.  The right half with the tiles and actors cant be reduced to a smaller size, so it takes up like half the screen. Im using the ThinkPad's docking station, but how can I fix it in stencyl?
I don't wanna mess too much with the options, so could somebody help?

I think you can just drag the scrolling bar to the side.

or use zoom + and - buttons

or use zoom + and - buttons

I think he means the palette is taking up too much of the screen space, not the scene itself in the scene editor.

Try this: View > Reset Layout

I think you can just drag the scrolling bar to the side.

I know, but thats the problem, I cant. The arrow does show up, but it doesnt do anything

Try this: View > Reset Layout

Oh, thanks! That worked