diff --git a/doc/child-object-creation.md b/doc/child-object-creation.md
new file mode 100644
index 000000000..c14166b39
--- /dev/null
+++ b/doc/child-object-creation.md
@@ -0,0 +1,33 @@
+# Admin object's management - create a child object
+
+## Usage
+> Objects of the Admin can be configured :
+> * By setting particular **attributes** to the object
+> * By associating **children** to the object
+>
+> Children can be added, deleted, reordered in the list. Also, it's possible to configure it in a special way for the parent object, by setting children attributes for all the children.
+>
+> This documentation explains how to associate a child to a parent object.
+
+### Create a new object for your child in the admin
+> Information is available for object's creation: [Modular step management](https://github.com/01-edu/public/blob/master/doc/object-creation.md)
+
+### Add this new object as a child of your parent's object
+
+#### 1. Edit the parent object
+
+
+
+#### 2. Go to *Children* > *Add a child*
+![add child to parent object](https://user-images.githubusercontent.com/35296671/56506977-de50c800-6517-11e9-9c71-d19a1ec4e5cd.png)
+
+#### 3. Set up the new child:
+* Enter its name in the input "Add a child name"
+* Select your step object in the select input
+* Click on "ADD"
+
+> Your step is then related to its parent. You can see it in the *Children* section of the parent's object. There, you can now:
+> * Delete the child from its parent (the actual object of your child will not be deleted).
+> * Reorder it in the children's list, by dragging it to the place you want.
+> * Go to update its settings by clicking on the eye of its reference (it will redirect you to the actual object of your step).
+
diff --git a/doc/modular-steps-management.md b/doc/modular-steps-management.md
index 65c5a5933..1197caca4 100644
--- a/doc/modular-steps-management.md
+++ b/doc/modular-steps-management.md
@@ -9,40 +9,20 @@
>
> This documentation explains how to manage these steps.
-## Creating a step:
+## Create your step child object
### Create a new object for your step in the admin
-> (in *Admin* > *Add new object*)
+> Information is available for object's creation: [Object creation](https://github.com/01-edu/public/blob/master/doc/object-creation.md)
-
-
-
-
-* The title of your object will be the title displayed to your candidates (for the step you are creating). Use an intellegible title for your user.
- > NB: you can always edit it in the *Admin*
-* This object must have the same type as its future parent object ("signup" or "onboarding").
+* This object must have the same type as its future parent object (*signup* or *onboarding*).
> Your step is then available in the *Admin*. You can find it in the section of its type (*SignUp* or *Onboarding*) or thanks to the search bar of the cursus object's page.
### Add this new object as a child of your parent's object
-#### 1. Edit the parent object (*Sign up* or *Administration*)
-
-
-
-#### 2. Go to *Children* > *Add a child*
-![add child to major object](https://user-images.githubusercontent.com/35296671/56506977-de50c800-6517-11e9-9c71-d19a1ec4e5cd.png)
-
-#### 3. Set up the new child:
-* Enter its name in the input "Add a child name"
-* Select your step object in the select input
-* Click on "ADD"
+* Edit the parent object: *Sign up* or *Administration*
-> Your step is then related to its parent. You can see it in the *Children* section of the parent's object. There, you can now:
-> * Delete the step as a child of its parent (the actual object of your step will not be deleted).
-> * Reorder it in the children's list, by dragging it to the place you want.
-> * Go to update its settings by clicking on the eye of its reference (it will redirect you to the actual object of your step).
-
+> Information is available for object's creation: [Child object creation](https://github.com/01-edu/public/blob/master/doc/child-object-creation.md)
## Settings for a `form` step
> In the step object you have created, 2 attributes must be filled:
diff --git a/doc/object-creation.md b/doc/object-creation.md
new file mode 100644
index 000000000..943294850
--- /dev/null
+++ b/doc/object-creation.md
@@ -0,0 +1,53 @@
+# Admin object's management - create an object
+
+## Usage
+> Elements of the app are managed threw objects in *Admin*.
+
+> Objects of the Admin are first created and defined:
+> * By their **title**,
+> * By their **type**.
+
+> Then it can be configured threw:
+> * Attributes,
+> * Children.
+
+> This documentation explains how to create an object.
+
+### Create a new object in the admin
+> (in *Admin* > *Add new object*)
+
+
+
+
+
+* The **title** of your object will be the title displayed to your candidates. Use an intellegible title for your user.
+ > NB: you can always edit it in the *Admin*
+
+* The **type** depends on the nature of your object:
+ * **Campus** is used to declare a school.
+ * Examples: *Alem*, *Madeira*, etc.
+ * Campus can contains cursus: *Alem* contains for example *01-classical* and *Piscine Go*.
+ * **Cursus** is used to declare a course.
+ * Examples: *01-classical*, *Piscine Go*, etc.
+ * Cursuses can contains cursuses: the main cursus *01-classical*, for example, contains cursuses like *Piscine Go*, but also all the branches that the student have access to, as *Web*, *Security*, *Algorythm*, *Design*, etc.
+ * Cursuses can contains quests: *Piscine Go* of *01-classical* contains quests like *Quest 1* or *Quest 2*.
+ * **Quest** is used to declare a project.
+ * Examples: *Quest 1*, *Quest 2*, etc.
+ * Quest contains exercises: *Quest 1* of *Piscine Go* contains exercises like *printalphabet* or *printcomb*.
+ * Exercise is used to declare exercises
+ * Examples: *printalphabet*, *printcomb*, *atoi*, etc.
+ * Exercises doesn't contains any children.
+ * Signup is used to declare steps of the registration.
+ * Examples: *Using our services*, *Tell us more about you*, etc.
+ * One major object *Sign up* contains all the sign up's modular steps : *Using our services*, *Tell us more about you*, etc.
+ * Onbaording is used to declare steps of the onbaording.
+ * Examples: *Toad*, *Administration*, *Additional Informations*, *Chart 01*, etc.
+ * Three main objects define the major steps of the onboarding : *Toad*, *Administration*, *Piscine*.
+ * *Administration* contains modular steps: *Additional Informations*, *Chart 01*, etc.
+
+> The child object is then available in the *Admin*. It can be found in the section of its type or thanks to the search bar of the cursus object's page.
+
+> More information is available:
+> * for setting attributes of an object: (soon available)
+> * for setting children of an object: [Child object creation](https://github.com/01-edu/public/blob/master/doc/child-object-creation.md)
+> * for creation of modular steps in Sign up and onboarding's Administration object: [Modular step management](https://github.com/01-edu/public/blob/master/doc/modular-steps-management.md)