Administration; authorities (10)
I believe the answer is:
management
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">administration</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(management is a kind of administration)</span><br/ ><br/ >'<span class="explanation-format__original">authorities</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for management that I've seen before include "Business's upper echelons" , "board" , "Administration" , "Organisation's runners" , "Organisation's leaders" .)