modify the settings to allow account-specific settings, eg. for "isRegistered"

src/views/ContactImportView.vue

@@ -16,9 +16,9 @@
       Contact Import
     </h1>
 
-    <span>
-      Note that you will have to make them visible one-by-one in the list of
-      Contacts.
+    <span class="flex justify-center">
+      <input type="checkbox" v-model="makeVisible" class="mr-2" />
+      Make my activity visible to these contacts.
     </span>
     <div v-if="sameCount > 0">
       <span v-if="sameCount == 1"
@@ -115,6 +115,7 @@ export default class ContactImportView extends Vue {
     Record<string, { new: string; old: string }>
   > = {}; // for existing contacts, it shows the difference between imported and existing contacts for each key
   importing = false;
+  makeVisible = true;
   sameCount = 0;
 
   async created() {