:You only need add a parenthetical tag to the title of articles if it would be ambiguous.  Since there is no existing article on change management, for example, it would be fine to put an article on change-management-in-general under the title "Change management".  Certainly articles discussing these topics in general would be much more appropriate to an encyclopedia than merely documenting the subsections of one particular government standard.  And any respectable encylopedia should have an article on something as important as change management.