diff --git a/alaka-defaults.yml b/alaka-defaults.yml
index 23de88f..09c51d3 100644
--- a/alaka-defaults.yml
+++ b/alaka-defaults.yml
@@ -43,7 +43,7 @@ authentik:
 nextcloud:
   env:
     DEFAULT_QUOTA: "100 MB"
-    APPS: "calendar groupfolders"
+    APPS: "groupfolders contacts"
     BBB_URL: "{{bbb_url}}"
     FPM_MAX_CHILDREN: 45
     FPM_START_SERVERS: 6
diff --git a/config-sets.yml b/config-sets.yml
new file mode 100644
index 0000000..eee96af
--- /dev/null
+++ b/config-sets.yml
@@ -0,0 +1,84 @@
+# config-sets.yml
+# Place this file at your alakazam root path.
+# Each top-level key is a named config-set containing per-app configurations.
+# Activate a set in any instance .yml or alaka.yml:
+#
+#   CONFIG-SETS:
+#     bbb: true
+#     calendar: true
+#
+# Disable a set inherited from a group alaka.yml by setting it to false:
+#
+#   CONFIG-SETS:
+#     bbb: false
+#
+
+bbb:
+  authentik:
+    env:
+      APPLICATIONS:
+        BBB:
+          url: https://nextcloud.example.com/apps/bbb
+          group:
+      EXTRA_ICONS:
+        BBB: ~/.abra/recipes/authentik/icons/bbb.png
+  nextcloud:
+    initial-hooks:
+      - app install_bbb
+
+calendar:
+  authentik:
+    env:
+      APPLICATIONS:
+        Calendar:
+          url: https://nextcloud.example.com/apps/calendar/
+          group:
+      EXTRA_ICONS:
+        Calendar: ~/.abra/recipes/authentik/icons/calendar.svg
+  nextcloud:
+    initial-hooks:
+      - app install_apps calendar
+
+collectives:
+  authentik:
+    env:
+      APPLICATIONS:
+        Wiki:
+          url: https://nextcloud.example.com/apps/collectives/
+          group:
+      EXTRA_ICONS:
+        Wiki: ~/.abra/recipes/authentik/icons/collectives.svg
+  nextcloud:
+    initial-hooks:
+      - app install_apps collectives
+
+spreed:
+  authentik:
+    env:
+      APPLICATIONS:
+        Chat:
+          url: https://nextcloud.example.com/apps/spreed/
+          group:
+      EXTRA_ICONS:
+        Chat: ~/.abra/recipes/authentik/icons/talk.svg
+  nextcloud:
+    initial-hooks:
+      - app install_apps spreed
+
+nuudel:
+  authentik:
+    env:
+      APPLICATIONS:
+        Umfrage:
+          url: https://nuudel.digitalcourage.de/
+          group:
+      EXTRA_ICONS:
+        Umfrage: ~/.abra/recipes/authentik/icons/nuudel.png
+
+whiteboard:
+  nextcloud:
+    initial-hooks:
+      - app install_whiteboard
+    uncomment:
+      - compose.whiteboard.yml
+      - SECRET_WHITEBOARD_JWT_VERSION