diff --git a/src/hooks/useSchedule.js b/src/hooks/useSchedule.js
index a5f0862..0ec43ad 100644
--- a/src/hooks/useSchedule.js
+++ b/src/hooks/useSchedule.js
@@ -4,45 +4,65 @@ import useTracks from './useTracks.js';
 import useEventTypes from './useEventTypes.js';
 import useHalls from './useHalls.js';
 import useSlots from './useSlots.js';
-import { calculateProgress } from '../utils.js';
+import { addIdAndRelations, calculateProgress } from '../utils.js';
+import { useMemo } from 'react';
 
 export default function useSchedule(conferenceId) {
     const {
-        data: events,
-        isLoading: eventsLoading,
-        isValidating: eventsValidating,
-    } = useEvents(conferenceId);
-
-    const {
-        data: speakers,
+        data: speakersResponse,
         isLoading: speakersLoading,
         isValidating: speakersValidating,
     } = useSpeakers(conferenceId);
 
+    const speakers = useMemo(() => addIdAndRelations(speakersResponse || []), [speakersResponse]);
+
     const {
-        data: tracks,
+        data: tracksResponse,
         isLoading: tracksLoading,
         isValidating: tracksValidating,
     } = useTracks(conferenceId);
 
+    const tracks = useMemo(() => addIdAndRelations(tracksResponse || []), [tracksResponse]);
+
     const {
-        data: eventTypes,
+        data: eventTypesResponse,
         isLoading: eventTypesLoading,
         isValidating: eventTypesValidating,
     } = useEventTypes(conferenceId);
 
+    const eventTypes = useMemo(() => addIdAndRelations(eventTypesResponse || []), [eventTypesResponse]);
+
     const {
-        data: halls,
+        data: hallsResponse,
         isLoading: hallsLoading,
         isValidating: hallsValidating,
     } = useHalls(conferenceId);
 
+    const halls = useMemo(() => addIdAndRelations(hallsResponse || []), [hallsResponse]);
+
     const {
-        data: slots,
+        data: eventsResponse,
+        isLoading: eventsLoading,
+        isValidating: eventsValidating,
+    } = useEvents(conferenceId);
+
+    const events = useMemo(() => addIdAndRelations(eventsResponse || [], [
+        ['event_type', eventTypes, 'event_type_id'],
+        ['track', tracks, 'track_id'],
+        ['participant_users', speakers, 'participant_user_ids'],
+    ]), [eventsResponse, eventTypes, tracks, speakers]);
+
+    const {
+        data: slotsResponse,
         isLoading: slotsLoading,
         isValidating: slotsValidating,
     } = useSlots(conferenceId);
 
+    const slots = useMemo(() => addIdAndRelations(slotsResponse || [], [
+        ['hall', halls, 'hall_id'],
+        ['event', events, 'event_id'],
+    ]), [slotsResponse, halls, events]);
+
     const {
         isStarted: isLoading,
         remainingProgress: loadingProgress,
@@ -53,6 +73,10 @@ export default function useSchedule(conferenceId) {
         remainingProgress: validatingProgress,
     } = calculateProgress(eventsValidating, speakersValidating, tracksValidating, eventTypesValidating, hallsValidating, slotsValidating);
 
+    const {
+        isComplete,
+    } = calculateProgress(events, speakers, tracks, eventTypes, halls, slots);
+
     return {
         events,
         speakers,
@@ -64,5 +88,6 @@ export default function useSchedule(conferenceId) {
         loadingProgress,
         isValidating,
         validatingProgress,
+        isComplete,
     };
 }