CHAPTER 3. COOPERATION AS REFERRED TO IN ARTICLE 93 OF THE STATUTE
ยง 2. Actions of the public prosecutor and the investigating judge
Section 50
1. The public prosecutor shall transmit the request for cooperation to the investigating judge if it involves:
(b) cooperation in a hearing by the ICC of a witness or expert by means of video conferencing;
Facilitating voluntary appearance of persons - authority - ICC proceedings
EDIT.