diff --git a/.gitignore b/.gitignore
index eac073f..81ddf95 100644
--- a/.gitignore
+++ b/.gitignore
@@ -29,3 +29,4 @@ yarn-error.log
 /public/media/
 /migrations/*
 !/migrations/.gitkeep
+/.build
diff --git a/src/Entity/Conference.php b/src/Entity/Conference.php
index 9d19915..dff0440 100644
--- a/src/Entity/Conference.php
+++ b/src/Entity/Conference.php
@@ -4,6 +4,8 @@ namespace App\Entity;
 
 use App\Core\Entity\EntityInterface;
 use App\Repository\ConferenceRepository;
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
 
 /**
@@ -54,6 +56,21 @@ class Conference implements EntityInterface
      */
     protected $date;
 
+    /**
+     * @ORM\Column(type="float", nullable=true)
+     */
+    private $price;
+
+    /**
+     * @ORM\ManyToMany(targetEntity=Speaker::class, inversedBy="conferences")
+     */
+    private $speakers;
+
+    public function __construct()
+    {
+        $this->speakers = new ArrayCollection();
+    }
+
     public function getId(): ?int
     {
         return $this->id;
@@ -142,4 +159,40 @@ class Conference implements EntityInterface
 
         return $this;
     }
+
+    public function getPrice(): ?float
+    {
+        return $this->price;
+    }
+
+    public function setPrice(?float $price): self
+    {
+        $this->price = $price;
+
+        return $this;
+    }
+
+    /**
+     * @return Collection<int, Speaker>
+     */
+    public function getSpeakers(): Collection
+    {
+        return $this->speakers;
+    }
+
+    public function addSpeaker(Speaker $speaker): self
+    {
+        if (!$this->speakers->contains($speaker)) {
+            $this->speakers[] = $speaker;
+        }
+
+        return $this;
+    }
+
+    public function removeSpeaker(Speaker $speaker): self
+    {
+        $this->speakers->removeElement($speaker);
+
+        return $this;
+    }
 }
diff --git a/src/Entity/Project.php b/src/Entity/Project.php
index c0edf7e..8a9ffe6 100644
--- a/src/Entity/Project.php
+++ b/src/Entity/Project.php
@@ -55,6 +55,11 @@ class Project implements EntityInterface
      */
     private $events;
 
+    /**
+     * @ORM\Column(type="float", nullable=true)
+     */
+    private $price;
+
     public function __construct()
     {
         $this->establishments = new ArrayCollection();
@@ -206,4 +211,16 @@ class Project implements EntityInterface
 
         return $this;
     }
+
+    public function getPrice(): ?float
+    {
+        return $this->price;
+    }
+
+    public function setPrice(?float $price): self
+    {
+        $this->price = $price;
+
+        return $this;
+    }
 }
diff --git a/src/Entity/Speaker.php b/src/Entity/Speaker.php
index 5b6e52c..fa513b8 100644
--- a/src/Entity/Speaker.php
+++ b/src/Entity/Speaker.php
@@ -61,10 +61,16 @@ class Speaker implements EntityInterface, EncryptedEntityInterface
      */
     private $color;
 
+    /**
+     * @ORM\ManyToMany(targetEntity=Conference::class, mappedBy="speakers")
+     */
+    private $conferences;
+
     public function __construct()
     {
         $this->interventions = new ArrayCollection();
         $this->events = new ArrayCollection();
+        $this->conferences = new ArrayCollection();
     }
 
     public function __toString()
@@ -209,4 +215,31 @@ class Speaker implements EntityInterface, EncryptedEntityInterface
 
         return $this;
     }
+
+    /**
+     * @return Collection<int, Conference>
+     */
+    public function getConferences(): Collection
+    {
+        return $this->conferences;
+    }
+
+    public function addConference(Conference $conference): self
+    {
+        if (!$this->conferences->contains($conference)) {
+            $this->conferences[] = $conference;
+            $conference->addSpeaker($this);
+        }
+
+        return $this;
+    }
+
+    public function removeConference(Conference $conference): self
+    {
+        if ($this->conferences->removeElement($conference)) {
+            $conference->removeSpeaker($this);
+        }
+
+        return $this;
+    }
 }
diff --git a/src/Form/ConferenceType.php b/src/Form/ConferenceType.php
index 9ffcf15..cef31ed 100644
--- a/src/Form/ConferenceType.php
+++ b/src/Form/ConferenceType.php
@@ -6,6 +6,7 @@ use App\Entity\Conference;
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\OptionsResolver\OptionsResolver;
+use Symfony\Component\Form\Extension\Core\Type\NumberType;
 
 class ConferenceType extends AbstractType
 {
@@ -14,10 +15,21 @@ class ConferenceType extends AbstractType
         $builder
             ->add('label')
             ->add('themeType')
+            ->add('price', NumberType::class, [
+                'attr' => [
+                    'step' => 0.01,
+                ],
+                'scale' => 2,
+                'required' => false,
+                'html5' => true,
+            ])
             ->add('date', null, [
                 'html5' => true,
                 'widget' => 'single_text',
             ])
+            ->add('speakers', null, [
+                'expanded' => true,
+            ])
             ->add('persons')
             ->add('content', null, [
                 'attr' => ['rows' => 7],
diff --git a/src/Form/ProjectType.php b/src/Form/ProjectType.php
index 8180aa6..312781d 100644
--- a/src/Form/ProjectType.php
+++ b/src/Form/ProjectType.php
@@ -8,6 +8,7 @@ use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 use App\Core\Form\Type\CollectionType;
 use Doctrine\ORM\EntityRepository;
+use Symfony\Component\Form\Extension\Core\Type\NumberType;
 
 class ProjectType extends AbstractType
 {
@@ -26,8 +27,23 @@ class ProjectType extends AbstractType
                         ->addOrderBy('e.name', 'ASC');
                 },
             ])
-            ->add('description')
-            ->add('client')
+            ->add('price', NumberType::class, [
+                'row_attr' => [
+                    'class' => 'col-md-3',
+                ],
+                'attr' => [
+                    'step' => 0.01,
+                ],
+                'scale' => 2,
+                'required' => false,
+                'html5' => true,
+            ])
+            ->add('description', null, [
+                'attr' => ['rows' => 7],
+            ])
+            ->add('client', null, [
+                'attr' => ['rows' => 7],
+            ])
             ->add('files',
                 CollectionType::class,
                 [
diff --git a/templates/admin/conference/_form.html.twig b/templates/admin/conference/_form.html.twig
index c08b13d..0cecf16 100644
--- a/templates/admin/conference/_form.html.twig
+++ b/templates/admin/conference/_form.html.twig
@@ -1,6 +1,6 @@
 <div class="row">
     <div class="col-md-3 order-1 pr-md-3">
-        {% for item in ['themeType', 'date', 'persons'] %}
+        {% for item in ['themeType', 'date', 'persons', 'price', 'speakers'] %}
             {% include(configuration.view('form_widget', '@Core/admin/crud/_form_widget.html.twig')) with {form: form[item]} %}
         {% endfor %}
     </div>
diff --git a/templates/admin/intervention/_form.html.twig b/templates/admin/intervention/_form.html.twig
index d2372a2..9a397a3 100644
--- a/templates/admin/intervention/_form.html.twig
+++ b/templates/admin/intervention/_form.html.twig
@@ -1,6 +1,6 @@
 <div class="row">
     <div class="col-md-3">
-        {% for item in ['date', 'establishmentGroups', 'activityReference', 'groups', 'levels', 'speakers'] %}
+        {% for item in ['date', 'establishmentGroups', 'activityReference', 'groups', 'levels', 'speakers', 'price'] %}
             {% include(configuration.view('form_widget', '@Core/admin/crud/_form_widget.html.twig')) with {form: form[item]} %}
         {% endfor %}
     </div>
diff --git a/translations/messages.fr.yaml b/translations/messages.fr.yaml
index 2f2154d..16518a3 100644
--- a/translations/messages.fr.yaml
+++ b/translations/messages.fr.yaml
@@ -44,3 +44,4 @@
 "Distance": "Distance (sans retour)"
 "Is round trip": "Aller-retour"
 "Amount": "Montant (TTC)"
+"Price": "Prix"