added another choose example (#16972)

Co-authored-by: Franck Nijhof <frenck@frenck.nl>

source/_docs/scripts.markdown

@@ -610,6 +610,64 @@ automation:
 
 {% endraw %}
 
+
+More `choose` can be used together. This is the case of an IF-IF.
+
+The following example shows how a single automation can control entities that aren't related to each other but have in common the same trigger.
+
+When the sun goes below the horizon, the `porch` and `garden` lights must turn on. If someone is watching the TV in the living room, there is a high chance that someone is in that room, therefore the living room lights have to turn on too. The same concept applies to the `studio` room.
+
+{% raw %}
+
+```yaml
+# Example with "if" and "if"
+automation:
+  - alias: "Turn lights on when the sun gets dim and if some room is occupied"
+      trigger:
+        - platform: numeric_state
+          entity_id: sun.sun
+          attribute: elevation
+          below: 4
+      action:
+        # This must always apply
+        - service: light.turn_on
+          data:
+            brightness: 255
+            color_temp: 366
+          target:
+            entity_id:
+              - light.porch
+              - light.garden
+        # IF a entity is ON
+        - choose:
+            - conditions:
+                - condition: state
+                  entity_id: binary_sensor.livingroom_tv
+                  state: "on"
+              sequence:
+                - service: light.turn_on
+                  data:
+                    brightness: 255
+                    color_temp: 366
+                  target:
+                    entity_id: light.livingroom
+         # IF another entity not related to the previous, is ON
+        - choose:
+            - conditions:
+                - condition: state
+                  entity_id: binary_sensor.studio_pc
+                  state: "on"
+              sequence:
+                - service: light.turn_on
+                  data:
+                    brightness: 255
+                    color_temp: 366
+                  target:
+                    entity_id: light.studio
+```
+
+{% endraw %}
+
 [Script component]: /integrations/script/
 [automations]: /getting-started/automation-action/
 [Alexa/Amazon Echo]: /integrations/alexa/