In general, the dark red corner, you may get the child ZSphere will move away. ZSpheres look round, but for no geometry of its own.
But if this slider was set to 5, ZBrush would ask for confirmation before allowing the change to be made. For this reason, ZBrush will warn you and ask for confirmation any time you ask it to perform an operation that will reset the history. Disabling this button will deactivate any undo history. You will not have access to the Undo History feature, but you will also have a smaller file size. OBJ or.
