By default, we directly operate the parent object, no matter whether it is selected, hidden, or deleted, it will not affect the child objects, but if there are too many child objects, we cannot adjust the child objects one by one. We hope that when operating the parent object , child objects are attached at the same time,
how to select the parent object and all its child objects?
In the outline view, first select the parent object, then right-click "Select Level" to select all child objects at the same time
How to hide the parent object and all his children at the same time?
In the outline view, shift + click the eye icon to hide the parent object and its child objects at the same time
How to expand/collapse all levels under a parent object in the outline view at one time?
shitt + left mouse button, click on the parent object, click once to expand all subsets, click again to collapse all subsets