[Set the anchor point of the object]
When selecting multiple objects, [v+alt+middle mouse button] can set the anchor point of the object to an object. Quickly select similar items.
[Quickly select an object of the same type in the scene]
First select the type of object you want to select, and then press the shortcut key [Shit+E] to select the same type of object in the scene.
[Keep simulation changes]
To make small balls, bricks, tires, etc. scattered everywhere, you can use the [Preserve Simulation Change] method to achieve the feeling of objects falling randomly. It is relatively labor-saving and natural than doing it manually.
[Estimation of scene construction distance]
In the top view, hold down the middle mouse button and pull a line from the left to the right of the location to be measured. You can see the distance between the two points (UE4 unit is centimeters).