diff --git a/lib/www/client/source/src/components/app-bar-extension-project.vue b/lib/www/client/source/src/components/app-bar-extension-project.vue
new file mode 100644
index 0000000..5ac8907
--- /dev/null
+++ b/lib/www/client/source/src/components/app-bar-extension-project.vue
@@ -0,0 +1,48 @@
+<template>
+  <v-tabs :value="tab" show-arrows>
+    <v-tab v-for="tab, index in tabs" :key="index" link :to="tabLink(tab.href)" v-text="tab.text"></v-tab>
+  </v-tabs>
+</template>
+
+<script>
+import { mapActions, mapGetters } from 'vuex';
+
+export default {
+  name: 'DougalAppBarExtensionProject',
+  data() {
+    return {
+      tabs: [
+        { href: "summary", text: "Summary" },
+        { href: "lines", text: "Lines" },
+        { href: "plan", text: "Plan" },
+        { href: "sequences", text: "Sequences" },
+        { href: "calendar", text: "Calendar" },
+        { href: "log", text: "Log" },
+        { href: "qc", text: "QC" },
+        { href: "graphs", text: "Graphs" },
+        { href: "map", text: "Map" }
+      ]
+    };
+  },
+
+  computed: {
+
+    page () {
+      return this.$route.path.split(/\/+/)[3];
+    },
+
+    tab () {
+      return this.tabs.findIndex(t => t.href == this.page);
+    },
+
+  },
+
+  methods: {
+
+    tabLink (href) {
+      return `/projects/${this.$route.params.project}/${href}`;
+    }
+
+  }
+}
+</script>
diff --git a/lib/www/client/source/src/components/navigation.vue b/lib/www/client/source/src/components/navigation.vue
index 2e0fdd8..cab76e1 100644
--- a/lib/www/client/source/src/components/navigation.vue
+++ b/lib/www/client/source/src/components/navigation.vue
@@ -71,17 +71,10 @@
 
         </v-menu>
 
-        <!--
-        <v-btn small text class="ml-2" title="Log out" link to="/?logout=1">
-          <v-icon small>mdi-logout</v-icon>
-        </v-btn>
-        -->
       </template>
     </template>
-    <template v-slot:extension v-if="$route.matched.find(i => i.name == 'Project')">
-      <v-tabs :value="tab" show-arrows align-with-title>
-        <v-tab v-for="tab, index in tabs" :key="index" link :to="tabLink(tab.href)" v-text="tab.text"></v-tab>
-      </v-tabs>
+    <template v-slot:extension v-if="appBarExtension">
+      <div :is="appBarExtension"></div>
     </template>
   </v-app-bar>
 
@@ -95,24 +88,17 @@ export default {
   data() {
     return {
       drawer: false,
-      tabs: [
-        { href: "summary", text: "Summary" },
-        { href: "lines", text: "Lines" },
-        { href: "plan", text: "Plan" },
-        { href: "sequences", text: "Sequences" },
-        { href: "calendar", text: "Calendar" },
-        { href: "log", text: "Log" },
-        { href: "qc", text: "QC" },
-        { href: "graphs", text: "Graphs" },
-        { href: "map", text: "Map" }
-      ],
       path: []
     };
   },
 
   computed: {
-    tab () {
-      return this.tabs.findIndex(t => t.href == this.$route.path.split(/\/+/)[3]);
+
+    appBarExtension () {
+      return this.$route.matched
+        .filter(i => i.meta?.appBarExtension)
+        .map(i => i.meta.appBarExtension)
+        .pop()?.component;
     },
 
     ...mapGetters(['user', 'loading'])
@@ -131,9 +117,6 @@ export default {
   },
 
   methods: {
-    tabLink (href) {
-      return `/projects/${this.$route.params.project}/${href}`;
-    },
 
     breadcrumbs () {
       this.path = this.$route.matched
diff --git a/lib/www/client/source/src/router/index.js b/lib/www/client/source/src/router/index.js
index 7acf5d3..199eae7 100644
--- a/lib/www/client/source/src/router/index.js
+++ b/lib/www/client/source/src/router/index.js
@@ -16,7 +16,7 @@ import Log from '../views/Log.vue'
 import QC from '../views/QC.vue'
 import Graphs from '../views/Graphs.vue'
 import Map from '../views/Map.vue'
-
+import DougalAppBarExtensionProject from '../components/app-bar-extension-project'
 
 Vue.use(VueRouter)
 
@@ -100,7 +100,10 @@ Vue.use(VueRouter)
           text: (ctx) => ctx.$store.state.project.projectName || "…",
           href: (ctx) => `/projects/${ctx.$store.state.project.projectId || ctx.$route.params.project || ""}/`
         }
-      ]
+      ],
+      appBarExtension: {
+        component: DougalAppBarExtensionProject
+      }
     },
     children: [
       {