Slicer exports the slices as individual groups, the 'lay flat' option makes copies of these flattened onto the ground spaced apart by an entered amount, set in a logical h/w arrangement and numbered to match the original order, and these are also grouped.
You can adjust where these are by editing the group and of course make plan views of each as desired as scene-tabs ? Then export them as jpegs using once of the batch image exporter tools available...