Photo grid panel
With a photo grid selected, or a photo inside the grid

A grid of four photos, selected, and the Photo grid panel with the gap between photos and the layout

When it appears

With a photo grid selected, or a photo inside the grid.

Fields

FieldWhat it does
Gapgrid: the space between cells
Layoutgrid: the layout variant; the slider goes from 0 to 20; 0 is the best
Weightphoto: how much area it wants (2 = twice as much as one at 1); the slider goes from 0.25 to 5
Zoomphoto: the magnification in the cell, from 1 to 10
Rotationphoto: the rotation in the cell

The menu

The ≡ in the header: Sort by date puts the photos in the grid back in order of capture date. See Photo grid.