For chat invitation instance you are able to position it in the "Instance location on page" section. You've got two options. Either position at center, 4 corners, and 4 sides of the page, or put in your own custom coordinates. What you are not able to do is shift it from any of the given positions.
For example I would like my invitation to appear at the bottom right corner, however I would like it to be 20 pixels from the right, and 20 pixels from the bottom. It does not look pretty when the invitation window is hugging the border of the browser window. There is no option to do so. Does anyone know of a workaround? Can LivePerson add this option?