Clever leader is accommodating, at the moment (7)
I believe the answer is:
knowing
'clever' is the definition.
(thesaurus)
'leader is accommodating at the moment' is the wordplay.
'leader' becomes 'king' (King is an example).
'is accommodating' is an insertion indicator.
'at the moment' becomes 'now' (I've seen this before).
'king' enclosing 'now' is 'KNOWING'.
(Other definitions for knowing that I've seen before include "Experienced; intelligent" , "Fly" , "Wise" , "Being acquainted with" , "Being aware of" .)