Project Settings

Go to Edit > Project Settings > BlackBox to customise BlackBox.

Setting	Function
Auto-add BlackBox Component	Control whether a BlackBox component gets automatically added to newly created Prefabs. Regardless of the setting, an added BlackBox component can be removed at any point (and it won't be automatically re-added).
To New Prefabs	Adds the component to new base Prefabs.
To New Prefab Variants	Adds the component to new Prefab Variants.
Defaults For New Black Boxes	Control the default value for properties on newly-added BlackBox components.
Hide Transform	The Transform component is hidden by default.
Disable Apply	Apply is disabled by default.
Unlock When Nested	Unlock When Nested is on by default.
Unlock If Variant Root	Unlock If Variant Root is on by default.
General
Enable Temp Unlocking	By default, the Temp Unlocking workflow is enabled. However, since it can be used to create overrides, it might be in some teams' interest to disable it. By unchecking this option you can disable it for the whole team.
User-specific Preferences	The preferences in this section are per-user, and won't be shared with other users on the project.
Unlock All Prefabs	At any time, you can disable the functionality of BlackBox without having to remove the component from individual Prefabs. You can use this to temporarily disable all functionality in case BlackBox is interfering with a workflow. You can also turn this option on/off from the menu Tools > BlackBox > Unlock All Prefabs, or by hitting Shift + Ctrl + U on PC, or Shift + Cmd + U on Mac. This shortcut can be modified from Unity's Shortcut Manager.