Update two records of a table without having the ID

I have a table that I want to update, where I am relating the PKs of three tables:

The table I want to update is structured in this way:

CREATE TABLE IF NOT EXISTS 'sgtegcom'.'docente_has_rollprof' (
'idd' INT NOT NULL AUTO_INCREMENT,
'docente_iddo' INT NOT NULL,
'rollprof_idroll' INT NOT NULL,
'trabajo_id' INT NOT NULL,
 PRIMARY KEY ('idd', 'docente_iddo', 'rollprof_idroll', 'trabajo_id'),
INDEX 'fk_docente_has_rollprof_rollprof1_idx' ('rollprof_idroll' ASC),
INDEX 'fk_docente_has_rollprof_docente1_idx' ('docente_iddo' ASC),
INDEX 'fk_docente_has_rollprof_trabajo1_idx' ('trabajo_id' ASC),
CONSTRAINT 'fk_docente_has_rollprof_docente1'
FOREIGN KEY ('docente_iddo')
REFERENCES 'sgtegcom'.'docente' ('iddo')
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT 'fk_docente_has_rollprof_rollprof1'
FOREIGN KEY ('rollprof_idroll')
REFERENCES 'sgtegcom'.'rollprof' ('idroll')
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT 'fk_docente_has_rollprof_trabajo1'
FOREIGN KEY ('trabajo_id')
REFERENCES 'sgtegcom'.'trabajo' ('id')
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB

In this table, the roll of the teacher is assigned according to its function:

id_roll = 1(jurado principal)
id_roll = 2(jurado suplente)
id_roll = 3(tutor)

Now, how can I do to update the table when I have two different teachers with the id_roll to 1 ? (to give an example).

I put the PHP code that I have so far:

<?php
if (isset($editar))
{
$DT ="UPDATE 'trabajo' SET'nombretrabajo'='$tituloteg','mencion_idm'='$mencion','nucleo_idn'='$nucleo','consejo_idcon'='$cnucleo' 
WHERE id = '$id' ";
mysqli_query ($conexion, $DT);

$tutor ="UPDATE 'docente_has_rollprof' SET 'docente_iddo'='$stutor' WHERE 
rollprof_idroll = '3' and trabajo_id ='$id'";
mysqli_query ($conexion, $tutor);
if($conexion->connect_errno)
{
    echo "2";
}
else
{
    echo "1";
}    
}

P.D: with the tutor there is no problem, because it is a single record as seen before.