I read the article, but I don't believe for a moment 'pilots' will operate the aircraft from the ground....i think you do, and i apologize for not making it clear that the article is pure hype, imho.
According to BAE Systems, the dramatis personae are:
Aircrew - 2 plus 3 test personnel
Ground crew - 2 (UAV commander plus flight test observer)
It's not made clear what the "UAV commander" role consists of.
http://www.baesystems.com/magazine/BAES_051920/look-no-hands