P6 8.2: How to fit all tool bar icons on one row

I've reduced by tool bar icons down to where they should fit on one row at the top. I started out with two rows and then eliminated icons. But every time I try to move the last to the row will the others it won't do it. It moves the row with the other icons up. I'll attach a screen shot.

How do you fit all tool bar icons on one row?

Thanks,

Rob