Your playing him on a support duty so he will get forward and support attacks, the role description in the game explains this.
The support duty will give the player a bigger area to cover in the midfield, the hold position will just give him the instruction to not move from this area, it’s not a given though, anything can happen to make him stray a little.
Also what traits does the player have?
I think with the behaviour your looking for it’s best to use a defend duty.