Averaging with Haze and/or Opacity Follow

I have noticed that when measuring Haze and/or Opacity with the averaging module configured I am prompted for all the backings at once. Why do the backings not alternate with the averaged readings?

The operations described above are how the EasyMatch QC software has functioned with averaging enabled with Haze and/or Opacity for quite sometime. The averaging module was configured in this way to aid in faster measurements so the user is not constantly switching the sample and the background, this way only the sample has to move while the background stays. Not only does this improve production efficiency but samples measured with Haze and Opacity are typically more uniform and do not generally require averaging multiple readings.