diff --git a/geneit_backend/migrations/2024-05-23-163128_accommodation_module/down.sql b/geneit_backend/migrations/2024-05-23-163128_accommodation_module/down.sql
index 3512fca..bf3bfb7 100644
--- a/geneit_backend/migrations/2024-05-23-163128_accommodation_module/down.sql
+++ b/geneit_backend/migrations/2024-05-23-163128_accommodation_module/down.sql
@@ -1,5 +1,6 @@
 ALTER TABLE public.families
     DROP COLUMN enable_accommodations;
 
+DROP TABLE IF EXISTS accommodations_reservations_cals_urls;
 DROP TABLE IF EXISTS accommodations_reservations;
 DROP TABLE IF EXISTS accommodations_list;
\ No newline at end of file
diff --git a/geneit_backend/migrations/2024-05-23-163128_accommodation_module/up.sql b/geneit_backend/migrations/2024-05-23-163128_accommodation_module/up.sql
index 6ce2823..79d45ec 100644
--- a/geneit_backend/migrations/2024-05-23-163128_accommodation_module/up.sql
+++ b/geneit_backend/migrations/2024-05-23-163128_accommodation_module/up.sql
@@ -18,6 +18,9 @@ CREATE TABLE IF NOT EXISTS accommodations_list
     open_to_reservations BOOLEAN     NOT NULL DEFAULT false
 );
 
+COMMENT ON COLUMN accommodations_list.need_validation is 'true if family admin review is required for validation. False otherwise';
+COMMENT ON COLUMN accommodations_list.open_to_reservations is 'true if reservations can be created / updated. False otherwise';
+
 CREATE TABLE IF NOT EXISTS accommodations_reservations
 (
     id                SERIAL PRIMARY KEY,
@@ -29,4 +32,20 @@ CREATE TABLE IF NOT EXISTS accommodations_reservations
     reservation_start BIGINT  NOT NULL,
     reservation_end   BIGINT  NOT NULL,
     validated         BOOLEAN NULL
-);
\ No newline at end of file
+);
+
+COMMENT ON COLUMN accommodations_reservations.validated is 'null if not reviewed yet. true if reservation is accepted. false if reservation is rejected';
+
+CREATE TABLE IF NOT EXISTS accommodations_reservations_cals_urls
+(
+    id               SERIAL PRIMARY KEY,
+    family_id        integer     NOT NULL REFERENCES families ON DELETE CASCADE,
+    accommodation_id integer     NULL REFERENCES accommodations_list ON DELETE CASCADE,
+    user_id          INTEGER     NOT NULL REFERENCES users ON DELETE CASCADE,
+    name             VARCHAR(50) NOT NULL,
+    token            VARCHAR(50) NOT NULL,
+    time_create      BIGINT      NOT NULL,
+    time_used        BIGINT      NOT NULL
+);
+
+COMMENT ON COLUMN accommodations_reservations_cals_urls.accommodation_id is 'null to get reservations of all accommodations. otherwise get the reservations of the specified accommodation only';
diff --git a/geneit_backend/src/controllers/accommodations_reservations_controller.rs b/geneit_backend/src/controllers/accommodations_reservations_controller.rs
index 16c66f1..bda86ca 100644
--- a/geneit_backend/src/controllers/accommodations_reservations_controller.rs
+++ b/geneit_backend/src/controllers/accommodations_reservations_controller.rs
@@ -158,7 +158,9 @@ pub async fn validate_or_reject(
     q: web::Json<ValidateQuery>,
 ) -> HttpResult {
     if !m.membership().is_admin {
-        return Ok(HttpResponse::BadRequest().json("Only a family admin can validate a reservation!"));
+        return Ok(
+            HttpResponse::BadRequest().json("Only a family admin can validate a reservation!")
+        );
     }
 
     if m.validated == Some(q.validate) {
diff --git a/geneit_backend/src/schema.rs b/geneit_backend/src/schema.rs
index 14ad1a2..6f6200d 100644
--- a/geneit_backend/src/schema.rs
+++ b/geneit_backend/src/schema.rs
@@ -28,6 +28,21 @@ diesel::table! {
     }
 }
 
+diesel::table! {
+    accommodations_reservations_cals_urls (id) {
+        id -> Int4,
+        family_id -> Int4,
+        accommodation_id -> Nullable<Int4>,
+        user_id -> Int4,
+        #[max_length = 50]
+        name -> Varchar,
+        #[max_length = 50]
+        token -> Varchar,
+        time_create -> Int8,
+        time_used -> Int8,
+    }
+}
+
 diesel::table! {
     couples (id) {
         id -> Int4,
@@ -152,6 +167,9 @@ diesel::joinable!(accommodations_list -> families (family_id));
 diesel::joinable!(accommodations_reservations -> accommodations_list (accommodation_id));
 diesel::joinable!(accommodations_reservations -> families (family_id));
 diesel::joinable!(accommodations_reservations -> users (user_id));
+diesel::joinable!(accommodations_reservations_cals_urls -> accommodations_list (accommodation_id));
+diesel::joinable!(accommodations_reservations_cals_urls -> families (family_id));
+diesel::joinable!(accommodations_reservations_cals_urls -> users (user_id));
 diesel::joinable!(couples -> families (family_id));
 diesel::joinable!(couples -> photos (photo_id));
 diesel::joinable!(members -> families (family_id));
@@ -162,6 +180,7 @@ diesel::joinable!(memberships -> users (user_id));
 diesel::allow_tables_to_appear_in_same_query!(
     accommodations_list,
     accommodations_reservations,
+    accommodations_reservations_cals_urls,
     couples,
     families,
     members,