diff --git a/htdocs/admin/ticket.php b/htdocs/admin/ticket.php
index fc8a5e8e0b9..c36f6ae1d1b 100644
--- a/htdocs/admin/ticket.php
+++ b/htdocs/admin/ticket.php
@@ -191,6 +191,18 @@ if ($action == 'setvarother') {
 	if (!($res > 0)) {
 		$error++;
 	}
+
+	$param_delay_first_response = GETPOST('delay_first_response', 'int');
+	$res = dolibarr_set_const($db, 'TICKET_DELAY_BEFORE_FIRST_RESPONSE', $param_delay_first_response, 'chaine', 0, '', $conf->entity);
+	if (!($res > 0)) {
+		$error++;
+	}
+
+	$param_delay_between_responses = GETPOST('delay_between_responses', 'int');
+	$res = dolibarr_set_const($db, 'TICKET_DELAY_SINCE_LAST_RESPONSE', $param_delay_between_responses, 'chaine', 0, '', $conf->entity);
+	if (!($res > 0)) {
+		$error++;
+	}
 }
 
 
@@ -503,7 +515,8 @@ print '</td>';
 print '</tr>';
 
 // Auto assign ticket at user who created it
-print '<tr class="oddeven"><td>'.$langs->trans("TicketsAutoAssignTicket").'</td>';
+print '<tr class="oddeven">';
+print '<td>'.$langs->trans("TicketsAutoAssignTicket").'</td>';
 print '<td class="left">';
 if ($conf->use_javascript_ajax) {
 	print ajax_constantonoff('TICKET_AUTO_ASSIGN_USER_CREATE');
@@ -517,12 +530,41 @@ print $form->textwithpicto('', $langs->trans("TicketsAutoAssignTicketHelp"), 1,
 print '</td>';
 print '</tr>';
 
-print '</table><br>';
-
 if (!$conf->use_javascript_ajax) {
 	print '</form>';
 }
 
+// Define wanted maximum time elapsed before answers to tickets
+print '<form method="post" action="'.$_SERVER['PHP_SELF'].'" enctype="multipart/form-data" >';
+print '<input type="hidden" name="action" value="setvarother">';
+
+print '<tr class="oddeven">';
+print '<td>'.$langs->trans("TicketsDelayBeforeFirstAnswer")."</td>";
+print '<td class="left">
+	<input type="number" value="'.$conf->global->TICKET_DELAY_BEFORE_FIRST_RESPONSE.'" name="delay_first_response">
+	<input type="submit" class="button small" value="'.$langs->trans("Save").'">
+	</td>';
+print '<td class="center">';
+print $form->textwithpicto('', $langs->trans("TicketsDelayBeforeFirstAnswerHelp"), 1, 'help');
+print '</td>';
+print '</tr>';
+
+print '<tr class="oddeven">';
+print '<td>'.$langs->trans("TicketsDelayBetweenAnswers")."</td>";
+print '<td class="left">
+	<input type="number" value="'.$conf->global->TICKET_DELAY_SINCE_LAST_RESPONSE.'" name="delay_between_responses">
+	<input type="submit" class="button small" value="'.$langs->trans("Save").'">
+	</td>';
+print '<td class="center">';
+print $form->textwithpicto('', $langs->trans("TicketsDelayBetweenAnswersHelp"), 1, 'help');
+print '</td>';
+print '</tr>';
+
+print '</form>';
+
+print '</table><br>';
+
+
 // Admin var of module
 print load_fiche_titre($langs->trans("Notification"), '', '');