<G4> reads
“During a Match, the Drivers and Coach must remain in their Alliance Station. Drivers and Coaches may move to their Alliance Robot Interaction Spots when interacting with their Robot and following rules <SG4> and <SG5>”
If we to look at <SG4> and <SG5>, they say
“During the Autonomous Period, Drivers and Coaches may handle their own Robot while the Robot is in contact with their own Alliance Starting Tile (i.e. the tile the Robot started the match on), and not touching the Bump, within the following restrictions…”
And
"During the Driver Controlled Period, Drivers and Coaches may handle their own Robot as long as the robot has never left the Alliance Starting Tile. The intent of this rule is to allow teams to fix Robots which were unable to move at the start of the Match. Violations of this rule will result in a warning for minor offenses which do not affect the match. Egregious (match affecting) offenses will result in a Disqualification. Teams who receive multiple warnings may also receive a Disqualification at the head referee’s discretion.
Note: During the handling specified in <SG4> And <SG5> robots may be repositioned, but must be returned to a valid starting position as per <SG1>.
Note: Drivers and Coaches may only interact with a Robot if they are on or in the general vicinity of the Alliance Robot Interaction Spot that corresponds to the Alliance Starting Tile the Robot is on"
How long does a coach have to return to the Alliance Station? Is it legal for him to remain at the Aliance Robot Interaction Spot for the remainder of the match, or is it mandatory that he promptly return?