diff --git a/docs/software-developer-documentation/apis/python-v3-api.md b/docs/software-developer-documentation/apis/python-v3-api.md
index e0c4b8f8c0234da51bb6ee77b44f7bf4f36805e6..4f83f68b2926c1f78a56ef68eef910673bc10ed0 100644
--- a/docs/software-developer-documentation/apis/python-v3-api.md
+++ b/docs/software-developer-documentation/apis/python-v3-api.md
@@ -645,8 +645,7 @@ The new name for **experiment** is **collection**. You can use boths names inter
 exp = o.new_experiment
     code='MY_NEW_EXPERIMENT',
     type='DEFAULT_EXPERIMENT',
-    space='MY_SPACE',
-    project='YEASTS'
+    project='/MY_SPACE/YEASTS'
 )
 exp.save()
 ```
diff --git a/docs/user-documentation/general-admin-users/admins-documentation/customise-inventory-of-materials-and-samples.md b/docs/user-documentation/general-admin-users/admins-documentation/customise-inventory-of-materials-and-samples.md
index 346858665428a80bcebc5de6c6892c41d7992056..3a29b48ce070d59655443c57978de188681f4c15 100644
--- a/docs/user-documentation/general-admin-users/admins-documentation/customise-inventory-of-materials-and-samples.md
+++ b/docs/user-documentation/general-admin-users/admins-documentation/customise-inventory-of-materials-and-samples.md
@@ -29,7 +29,7 @@ to adopt the following steps:
 
  
 
- 
+### Create the Project folder
 
 To create the *Project* folder:
 
@@ -48,13 +48,16 @@ To create the *Project* folder:
 ![image info](img/new-project-form.png)
 
  
+### Create the Collection folder
 
 To register the *Collection* folder, inside the *Project* folder:
 
-1.  Click on the *Project* folder, in this case **Samples**.
+1.
+1.   Click on the *Project* folder, in this case **Samples**.
 2.  Click the **+ New** button in the main form and choose **Collection** from the dropdown.
 
 ![image info](img/create-collection-materials-1024x403.png)
+
 3.  Replace the automatically generated **Code** with something pertinent to the collection (e.g RAW\_SAMPLES)
 4.  Fill in the **Name** field (e.g. Raw Samples). Note that by default, the navigation menu on the left shows the name. If the name is not provided, the code is shown.
 5.  Select the **Default object type** from the list of available types. This is the *Object* for which the *Collection* is used. In this case, **Sample**.
@@ -67,8 +70,19 @@ To register the *Collection* folder, inside the *Project* folder:
 ![image info](img/new-collection-form.png)
 
  
+### Add the "+Object type" button in the Collection percentage
+
+If you use a Collection for one Object type, you can display a button to add that type to the Collection, as shown below.
+
+
+![image info](img/Collection-new-chemical-button.png)
+
+For this you need to edit the Collection form and set the Default Object type, as shown below.
+
+![image info](img/Edit-collection.png)
+
+![image info](img/Collection-default-object-type.png)
 
-Updated on April 26, 2023
  
 ## Delete Collections
 
@@ -94,7 +108,7 @@ To delete an existing Collection:
 
 ![image info](img/delete-collection-2.png)
 
-Updated on February 6, 2023
+
  
 ## Enable Storage Widget on Sample Forms
 
@@ -119,7 +133,7 @@ For this, follow the steps below:
 
 ![image info](img/settings-enable-storage-1024x509.png)
 
-Updated on April 26, 2023
+
 
 
 ## Configure Lab Storage
@@ -151,7 +165,7 @@ Fridges and freezers can be configured in the **Settings**, under **Utilities**.
     2. **Box validation**. In addition to **a**, a box name needs to be specified.
     3. **Box position validation**. In addition to **a** and **b**, the position in the box needs to be specified.
 
-Updated on April 26, 2023
+
  
 ## Add metadata to Storage Positions
  
@@ -172,4 +186,4 @@ It is possible to add additional information. This can be done by an
 *Instance Admin* by editing the *Object* Type **STORAGE\_POSITION** in
 the admin interface (see [New Entity Type Registration](./new-entity-type-registration.md)).
 
-Updated on February 6, 2023
+
diff --git a/docs/user-documentation/general-admin-users/admins-documentation/img/Collection-default-object-type.png b/docs/user-documentation/general-admin-users/admins-documentation/img/Collection-default-object-type.png
new file mode 100644
index 0000000000000000000000000000000000000000..b8b5353353f0ff7999506785e5c623002e940b55
Binary files /dev/null and b/docs/user-documentation/general-admin-users/admins-documentation/img/Collection-default-object-type.png differ
diff --git a/docs/user-documentation/general-admin-users/admins-documentation/img/Collection-new-chemical-button.png b/docs/user-documentation/general-admin-users/admins-documentation/img/Collection-new-chemical-button.png
new file mode 100644
index 0000000000000000000000000000000000000000..d57e700eb3ad7418eef18886f8af1e50ad007109
Binary files /dev/null and b/docs/user-documentation/general-admin-users/admins-documentation/img/Collection-new-chemical-button.png differ
diff --git a/docs/user-documentation/general-admin-users/admins-documentation/img/Edit-collection.png b/docs/user-documentation/general-admin-users/admins-documentation/img/Edit-collection.png
new file mode 100644
index 0000000000000000000000000000000000000000..4b1b8d1d8698773ff869634c9d49854fe059c0c4
Binary files /dev/null and b/docs/user-documentation/general-admin-users/admins-documentation/img/Edit-collection.png differ