From UVLayout Docs

Kbstate is controlled via command line args, so the easiest way to use it is to create a shortcut to the EXE, then add the command line args via the shortcut's properties.

Numbers in brackets are the defaults ...

-d,<num>    : fade out decay time (500, i.e. half a second)
-p,<x>,<y>  : window position
-r,<x>,<y>  : window size (600,55)
-s,<num>    : font pixel size (40)
-w,<num>    : font pixel weight (5)

To kill, move the mouse pointer inside the window and tap the Esc key.