Panel, board (9)
I believe the answer is:
committee
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">panel</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">board</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for committee that I've seen before include "Managing group" , "Group selected to undertake certain duties" , "governance team" , "Group delegated to consider matters" , "Select group of MPs, perhaps" .)