diff --git a/app/assets/stylesheets/new_design/personnes_impliquees.scss b/app/assets/stylesheets/new_design/personnes_impliquees.scss
index 80c227495..ac908f538 100644
--- a/app/assets/stylesheets/new_design/personnes_impliquees.scss
+++ b/app/assets/stylesheets/new_design/personnes_impliquees.scss
@@ -5,4 +5,10 @@
     list-style-type: disc;
     margin-left: 16px;
   }
+
+  // scss-lint:disable SelectorFormat
+  .form .select2-container .select2-selection__rendered {
+    padding: 12px;
+  }
+  // scss-lint:enable
 }
diff --git a/app/controllers/new_gestionnaire/dossiers_controller.rb b/app/controllers/new_gestionnaire/dossiers_controller.rb
index b23359872..76950e5a4 100644
--- a/app/controllers/new_gestionnaire/dossiers_controller.rb
+++ b/app/controllers/new_gestionnaire/dossiers_controller.rb
@@ -37,9 +37,13 @@ module NewGestionnaire
       @potential_recipients = procedure.gestionnaires.reject { |g| g == current_gestionnaire }
     end
 
-    def envoyer_a_instructeur
-      recipient = Gestionnaire.find(params[:recipient])
-      GestionnaireMailer.send_dossier(current_gestionnaire, dossier, recipient).deliver_later
+    def send_to_instructeurs
+      recipients = Gestionnaire.find(params[:recipients])
+
+      recipients.each do |recipient|
+        GestionnaireMailer.send_dossier(current_gestionnaire, dossier, recipient).deliver_later
+      end
+
       flash.notice = "Dossier envoyé"
       redirect_to(personnes_impliquees_gestionnaire_dossier_path(procedure, dossier))
     end
diff --git a/app/javascript/new_design/select2.js b/app/javascript/new_design/select2.js
index 268e47225..ccd14b117 100644
--- a/app/javascript/new_design/select2.js
+++ b/app/javascript/new_design/select2.js
@@ -13,4 +13,11 @@ addEventListener('turbolinks:load', () => {
     maximumSelectionLength: '5',
     width: '300px'
   });
+
+  $('.recipients-form select.select2-limited').select2({
+    language: 'fr',
+    placeholder: 'Sélectionnez des instructeurs',
+    maximumSelectionLength: '30',
+    width: '300px'
+  });
 });
diff --git a/app/views/new_gestionnaire/dossiers/_envoyer_dossier_block.html.haml b/app/views/new_gestionnaire/dossiers/_envoyer_dossier_block.html.haml
index 0fead70e5..20fccfb17 100644
--- a/app/views/new_gestionnaire/dossiers/_envoyer_dossier_block.html.haml
+++ b/app/views/new_gestionnaire/dossiers/_envoyer_dossier_block.html.haml
@@ -4,7 +4,11 @@
   %p.tab-paragraph
     Vous êtes le seul instructeur assigné sur cette démarche
 - else
-  = form_for dossier, url: envoyer_a_instructeur_gestionnaire_dossier_path(dossier.procedure, dossier), method: :post, html: { class: 'form' } do |f|
-    .flex.justify-start.align-baseline
-      = select_tag(:recipient, options_from_collection_for_select(potential_recipients, :id, :email))
+  = form_for dossier, url: send_to_instructeurs_gestionnaire_dossier_path(dossier.procedure, dossier), method: :post, html: { class: 'form recipients-form' } do |f|
+    .flex.justify-start.align-start
+      = select_tag(:recipients,
+        options_from_collection_for_select(potential_recipients, :id, :email),
+        multiple: true,
+        class: 'select2-limited',
+        placeholder: '')
       = f.submit "Envoyer", class: "button large send gap-left"
diff --git a/config/routes.rb b/config/routes.rb
index 78a27debe..19adc8ed6 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -322,7 +322,7 @@ Rails.application.routes.draw do
             post 'passer-en-instruction' => 'dossiers#passer_en_instruction'
             post 'repasser-en-construction' => 'dossiers#repasser_en_construction'
             post 'terminer'
-            post 'envoyer-a-instructeur' => 'dossiers#envoyer_a_instructeur'
+            post 'send-to-instructeurs' => 'dossiers#send_to_instructeurs'
             scope :carte do
               get 'position'
             end
diff --git a/spec/controllers/new_gestionnaire/dossiers_controller_spec.rb b/spec/controllers/new_gestionnaire/dossiers_controller_spec.rb
index 570a63cb9..65a0e2255 100644
--- a/spec/controllers/new_gestionnaire/dossiers_controller_spec.rb
+++ b/spec/controllers/new_gestionnaire/dossiers_controller_spec.rb
@@ -31,7 +31,7 @@ describe NewGestionnaire::DossiersController, type: :controller do
     end
   end
 
-  describe '#envoyer_a_instructeur' do
+  describe '#send_to_instructeurs' do
     let(:recipient) { create(:gestionnaire) }
     let(:gestionnaires) { [gestionnaire, recipient] }
     let(:mail) { double("mail") }
@@ -45,9 +45,9 @@ describe NewGestionnaire::DossiersController, type: :controller do
         .and_return(mail)
 
       post(
-        :envoyer_a_instructeur,
+        :send_to_instructeurs,
         params: {
-          recipient: recipient,
+          recipients: [recipient],
           procedure_id: procedure.id,
           dossier_id: dossier.id
         }
diff --git a/spec/features/new_gestionnaire/gestionnaire_spec.rb b/spec/features/new_gestionnaire/gestionnaire_spec.rb
index 24c5375ca..94826ca91 100644
--- a/spec/features/new_gestionnaire/gestionnaire_spec.rb
+++ b/spec/features/new_gestionnaire/gestionnaire_spec.rb
@@ -134,6 +134,32 @@ feature 'The gestionnaire part' do
     expect(page).to have_text(gestionnaire2.email)
   end
 
+  scenario 'A gestionnaire can send a dossier to several instructeurs', js: true do
+    instructeur_2 = FactoryBot.create(:gestionnaire)
+    instructeur_3 = FactoryBot.create(:gestionnaire)
+    procedure.gestionnaires << [instructeur_2, instructeur_3]
+
+    send_dossier = double()
+    expect(GestionnaireMailer).to receive(:send_dossier).and_return(send_dossier).twice
+    expect(send_dossier).to receive(:deliver_later).twice
+
+    log_in(gestionnaire.email, password)
+
+    click_on procedure.libelle
+    click_on dossier.user.email
+
+    click_on 'Personnes impliquées'
+
+    first('.select2-container', minimum: 1).click
+    find('li.select2-results__option[role="treeitem"]', text: instructeur_2.email).click
+    first('.select2-container', minimum: 1).click
+    find('li.select2-results__option[role="treeitem"]', text: instructeur_3.email).click
+
+    click_on 'Envoyer'
+
+    expect(page).to have_text("Dossier envoyé")
+  end
+
   def log_in(email, password)
     visit '/'
     click_on 'Connexion'