The key point is that as the Duma's Deputy Speaker, Wang Ye indeed had the right to propose the establishment of such a specialized working group.
As long as it was approved within the Duma, nobody could stop it.
Of course, if The Kremlin and the government thought it inappropriate and were unwilling to cooperate, then a working group established by the Duma alone would have very limited power, especially without any specific enforcement authority, which could also pose a significant problem.
But opportune for Wang Ye, he not only had good relations with The Kremlin and the government, but he had also reached a tacit agreement with them regarding this matter.
The Kremlin would not lend a hand, but neither would they obstruct Wang Ye.
And the government was fully cooperative!
Then the Joint Working Group that Wang Ye mentioned, once established, could be quite powerful!