diff --git a/certificates.yaml b/certificates.yaml
index af01633..77def6d 100644
--- a/certificates.yaml
+++ b/certificates.yaml
@@ -272,6 +272,13 @@ nodes:
           fallback-lang: de-de-formal
           translations:
             en-eu: "Remaining Semesters"
+      "welchessemester":
+        viewers: *view-minimal
+        display-label:
+          fallback: "Zeitraum"
+          fallback-lang: de-de-formal
+          translations:
+            en-eu: "Period"
       "zweck":
         viewers:
           - *pruefungsamt
@@ -348,8 +355,26 @@ nodes:
                         fallback-lang: de-de-formal
                         translations:
                           en-eu: "2 (two)"
-            "zweck":
+            "welchessemester":
               - "3":
+                  tag: text
+                  label:
+                    fallback: "Zeitraum"
+                    fallback-lang: de-de-formal
+                    translations:
+                      en-eu: "Period"
+                  placeholder: 
+                    fallback: "WiSe x - SoSe y"
+                    fallback-lang: de-de-formal
+                  default: null
+                  optional: true
+                  tooltip:
+                    fallback: "Auf welche Semester bezieht sich Ihr Antrag genau?"
+                    fallback-lang: de-de-formal
+                    translations:
+                      en-eu: "Which semesters does your application address?"
+            "zweck":
+              - "4":
                   tag: text
                   label:
                     fallback: "Organisation / Zweck"
@@ -366,7 +391,7 @@ nodes:
                       en-eu: "What do you need the certificate for? This information is not mandatory. It will exclusively
                         be used to improve internal processes."
             "kommunikation":
-              - "4": *kommunikation-field-optional
+              - "5": *kommunikation-field-optional
       "rueckfragen beantworten, studienabschluss":
         mode: manual
         display-label: