mechanics with disqualification

[rcwilco]

Have I got this right with the non-calling offical now doing DQ?
p.37 fed officials manual
The calling official goes to the table and reports the foul and somewhere along the line is told or finds out that this is the fifth foul. After reporting the foul but before letting any subs on that official moves away and the non calling offical comes over and notifes the coach, then the player and waits for the sub for the DQ player. Then that official lets any other subs on.
I would not think that you want both officials over there near the table and no one watching the floor.
Thanks ahead for the help.