Help cant remove or put icon back in menu.

I hope some one knows how to fix this, but anyway. I had the menu up in the game and somehow I draged the "log out" icon out, and when you close the menu the icon was still there I tried to drag it back but it wont let me, and I cant remove it, so whats the trick to remove it or put it back in the menu?

Thanks for any info on this.

Pan

Drag the small icon into the big menu icon that's always there.

Thanks for the info Davey, I was trying to drag it back in the menu while it was open, and that was a no go.