diff --git a/UNICADO-SMR/UNICADO-SMR-180-TF/UNICADO-SMR-180-TF_start.xml b/UNICADO-SMR/UNICADO-SMR-180-TF/UNICADO-SMR-180-TF_start.xml
index 209e22bc05837261e6e3820772e7a0bad840c2f6..4a3bb861bbfbf33f324c9086cd7f4d5e32ae6dbd 100644
--- a/UNICADO-SMR/UNICADO-SMR-180-TF/UNICADO-SMR-180-TF_start.xml
+++ b/UNICADO-SMR/UNICADO-SMR-180-TF/UNICADO-SMR-180-TF_start.xml
@@ -199,18 +199,20 @@
                         <upper_boundary>25</upper_boundary>
                     </luggage_mass_per_passenger>
                 </passenger_definition>
-                <multi_passenger_deck_layout description="Switch to select a multi passenger deck fuselage design. Switch: false (Off)">
-                    <value>false</value>
-                    <default>false</default>
-                    <specific_number_of_passenger_decks>
+                <multi_passenger_deck_layout description="Definition of multiple passenger decks">
+					<enable description="Switch to select a multi passenger deck fuselage design. Switch: true (On) / false (Off)">
+						<value>false</value>
+						<default>false</default>
+					</enable>
+                    <specific_number_of_passenger_decks description="Details for the multi passenger deck layout">
                         <value>2</value>
-                        <unit>-</unit>
+                        <unit>1</unit>
                         <lower_boundary>0</lower_boundary>
                         <upper_boundary>3</upper_boundary>
                         <default>2</default>
                     </specific_number_of_passenger_decks>
                 </multi_passenger_deck_layout>
-                <passenger_class_definition>
+                <passenger_class_definition description="Definition of the passenger classes.">
                     <class_distribution description="Relative passenger distribution for the classes: President Class/First Class/Business Class/Premium Economy/Economy. Sum must be equal to 1!">
                         <value>0/0/0/0/1</value>
                     </class_distribution>
diff --git a/UNICADO-SMR/UNICADO-SMR-180-TF/clean_sheet_design/UNICADO-SMR-180-TF.xml b/UNICADO-SMR/UNICADO-SMR-180-TF/clean_sheet_design/UNICADO-SMR-180-TF.xml
index f616879f6134d7e584e03141303fa60a1ff2ea67..0908958d090380872394e5ee2a5a547e45c1f45f 100644
--- a/UNICADO-SMR/UNICADO-SMR-180-TF/clean_sheet_design/UNICADO-SMR-180-TF.xml
+++ b/UNICADO-SMR/UNICADO-SMR-180-TF/clean_sheet_design/UNICADO-SMR-180-TF.xml
@@ -199,18 +199,20 @@
                         <upper_boundary>25</upper_boundary>
                     </luggage_mass_per_passenger>
                 </passenger_definition>
-                <multi_passenger_deck_layout description="Switch to select a multi passenger deck fuselage design. Switch: false (Off)">
-                    <value>false</value>
-                    <default>false</default>
-                    <specific_number_of_passenger_decks>
+                <multi_passenger_deck_layout description="Definition of multiple passenger decks">
+					<enable description="Switch to select a multi passenger deck fuselage design. Switch: true (On) / false (Off)">
+						<value>false</value>
+						<default>false</default>
+					</enable>
+                    <specific_number_of_passenger_decks description="Details for the multi passenger deck layout">
                         <value>2</value>
-                        <unit>-</unit>
+                        <unit>1</unit>
                         <lower_boundary>0</lower_boundary>
                         <upper_boundary>3</upper_boundary>
                         <default>2</default>
                     </specific_number_of_passenger_decks>
                 </multi_passenger_deck_layout>
-                <passenger_class_definition>
+                <passenger_class_definition description="Definition of the passenger classes.">
                     <class_distribution description="Relative passenger distribution for the classes: President Class/First Class/Business Class/Premium Economy/Economy. Sum must be equal to 1!">
                         <value>0/0/0/0/1</value>
                     </class_distribution>