Highlighting and Identification
You can "Highlight" a fixture by clicking the bulb icon, and only that fixture will light up all its RGB Channels and set its dimmer to max.
You can also trigger an "Identification" effect, which will highlight every fixture for 1 second in sequence, so you can better track if the fixtures are correctly ordered.
You can Edit the Group or add a new group also from the Arrangement page.

Grouping objects in the 3D view
The Arrangement tab orders your fixtures. Stage objects such as truss and props are arranged separately, in the 3D Visualizer's inspector panel, and two things there changed in v1.0.52.
Group and Ungroup are buttons now. Grouping objects was Ctrl+G only, hinted at by a line that disappeared as soon as you had one group, so most people never found it. The shortcuts still work.
Object rows also take Ctrl+click to multi-select, which fixture rows have always done.

