diff --git a/docs/concepts.md b/docs/concepts.md
index 48c8b783b..a96289ae0 100644
--- a/docs/concepts.md
+++ b/docs/concepts.md
@@ -317,3 +317,34 @@ The configuration will be created with the following schema:
 Please note that the ``created-by`` label is used to identify the configuration created by the IoT Hub portal.
 
 > For more information see [Automatic IoT device and module management](https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-automatic-device-management).
+
+## Site management
+
+### Layers
+
+It is possible to define a hierarchical structure corresponding to the areas in which the sensors are installed. On each layer, one or more devices can be associated. These layers will then be used for planning and  schedulers.
+
+![alt text](images/layers.png)
+
+> Note: As a layer can only refer to one planning (so one type of device model), only one type of devices should be linked to a layer.
+
+### Planning
+
+This functionality is designed to define commands to send to devices based on a schedule. A schedule can only be associated with a single device model, which allows you to obtain the list of available commands. A schedule must be linked to one or more layers with associated devices for the orders to be taken into account.
+
+![alt text](images/planning.png)
+
+> Note: When a layer is associated to a planning, all its children are automatically added too.
+
+#### Planning parameters
+
+- ``Name``: The ID of the device model.
+- ``Device Model``: The name of the device model.
+    > Note: Available commands depend on the selected device model.
+- ``Business Day``: Scheduled commands for business days.
+- ``Off Day``: Scheduled command for off days.
+- ``Date of application of this planning``: Start and end dates of validity of the planning.
+- ``Select your application areas``: Treeview displaying the list of layers.
+    > Note: Layers can be created after planning, but the link between the two entities can only be made here.
+    >
+    > A layer can be associated to only one schedule.
diff --git a/docs/dev-guide.md b/docs/dev-guide.md
index 1b8416a46..f9e76dc05 100644
--- a/docs/dev-guide.md
+++ b/docs/dev-guide.md
@@ -122,6 +122,7 @@ Here are different settings that the user can configure:
 * **Ideas__Authentication__Header**: (Optional, default value `Ocp-Apim-Subscription-Key`) Authentication header name.
 * **Ideas__Authentication__Token**: Authentication token.
 * **Job__SyncDatabaseJobRefreshIntervalInMinutes**: (Optional, default value `5`) The refresh interval in `minutes` to collect data from Azure IoT Hub (Devices, Iot Edge Devices...) and store them on the database of the Portal.
+* **Job__SendCommandsToDevicesIntervalInMinutes**: (Optional, default value `10`) The interval in `minutes` to send scheduled commands to devices.
 
 ### Connection strings
 
diff --git a/docs/dev-guide/migrations/v5-to-v6.md b/docs/dev-guide/migrations/v5-to-v6.md
new file mode 100644
index 000000000..5985466b5
--- /dev/null
+++ b/docs/dev-guide/migrations/v5-to-v6.md
@@ -0,0 +1,6 @@
+# Migrate from v5 to v6
+
+In this new version, a site management has been added, giving the possibility to schedule commands to send to devices.
+
+The following optional parameter has been added:
+`Job__SendCommandsToDevicesIntervalInMinutes`: The interval in `minutes` to send scheduled commands to devices. Its default value is 10.
diff --git a/docs/images/layers.png b/docs/images/layers.png
new file mode 100644
index 000000000..603a2a51b
Binary files /dev/null and b/docs/images/layers.png differ
diff --git a/docs/images/planning.png b/docs/images/planning.png
new file mode 100644
index 000000000..9947d2183
Binary files /dev/null and b/docs/images/planning.png differ
diff --git a/mkdocs.yml b/mkdocs.yml
index 4526377bb..a19e90d91 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -120,6 +120,7 @@ nav:
     - 'Migrations':
       - 'dev-guide/migrations/v3-to-v4.md'
       - 'dev-guide/migrations/v4-to-v5.md'
+      - 'dev-guide/migrations/v5-to-v6.md'
     - 'Project conception':
       - 'dev-guide/conception/diagrams.md'
   - Concepts: 'concepts.md'