diff --git a/handler/bookings.go b/handler/bookings.go
index 401be8d..634b8a2 100644
--- a/handler/bookings.go
+++ b/handler/bookings.go
@@ -9,7 +9,7 @@ import (
 	"github.com/rs/zerolog/log"
 )
 
-func (h Handler) BookDriverJourney(passengerid string, driverid string, journeyid string, returnWaitingDuration time.Duration, priceAmount float64, priceCurrency string, driverCompensationAmount float64, driverCompensationCurrency string, data map[string]any) (*types.Booking, error) {
+func (h Handler) BookDriverJourney(passengerid string, driverid string, journeyid string, returnWaitingDuration time.Duration, priceAmount float64, priceCurrency string, driverCompensationAmount float64, driverCompensationCurrency string, data map[string]any, groupId string) (*types.Booking, error) {
 	journey, err := h.Storage.GetDriverJourney(journeyid)
 	if err != nil {
 		log.Error().Err(err).Msg("could not find driver journey")
@@ -25,9 +25,14 @@ func (h Handler) BookDriverJourney(passengerid string, driverid string, journeyi
 
 	log.Debug().Float64("Price", priceAmount).Any("journey", journey.Price).Msg("store booking")
 
+	// Use provided group_id if set, otherwise generate a new one
+	if groupId == "" {
+		groupId = uuid.NewString()
+	}
+
 	booking := types.Booking{
 		Id:                       uuid.NewString(),
-		GroupId:                  uuid.NewString(),
+		GroupId:                  groupId,
 		Status:                   "WAITING_CONFIRMATION",
 		PassengerId:              passengerid,
 		DriverId:                 driverid,
diff --git a/servers/grpc/proto/gen/solidarity-transport.pb.go b/servers/grpc/proto/gen/solidarity-transport.pb.go
index 0861e94..8e11e2c 100644
--- a/servers/grpc/proto/gen/solidarity-transport.pb.go
+++ b/servers/grpc/proto/gen/solidarity-transport.pb.go
@@ -618,6 +618,7 @@ type BookDriverJourneyRequest struct {
 	Data                       *structpb.Struct       `protobuf:"bytes,7,opt,name=data,proto3" json:"data,omitempty"`
 	DriverCompensationAmount   float64                `protobuf:"fixed64,8,opt,name=driver_compensation_amount,json=driverCompensationAmount,proto3" json:"driver_compensation_amount,omitempty"`
 	DriverCompensationCurrency string                 `protobuf:"bytes,9,opt,name=driver_compensation_currency,json=driverCompensationCurrency,proto3" json:"driver_compensation_currency,omitempty"`
+	GroupId                    *string                `protobuf:"bytes,10,opt,name=group_id,json=groupId,proto3,oneof" json:"group_id,omitempty"`
 	unknownFields              protoimpl.UnknownFields
 	sizeCache                  protoimpl.SizeCache
 }
@@ -715,6 +716,13 @@ func (x *BookDriverJourneyRequest) GetDriverCompensationCurrency() string {
 	return ""
 }
 
+func (x *BookDriverJourneyRequest) GetGroupId() string {
+	if x != nil && x.GroupId != nil {
+		return *x.GroupId
+	}
+	return ""
+}
+
 type BookDriverJourneyResponse struct {
 	state         protoimpl.MessageState      `protogen:"open.v1"`
 	Booking       *SolidarityTransportBooking `protobuf:"bytes,1,opt,name=booking,proto3" json:"booking,omitempty"`
@@ -1262,7 +1270,7 @@ const file_solidarity_transport_proto_rawDesc = "" +
 	"\n" +
 	"journey_id\x18\x02 \x01(\tR\tjourneyId\"d\n" +
 	"\x18GetDriverJourneyResponse\x12H\n" +
-	"\x0edriver_journey\x18\x01 \x01(\v2!.SolidarityTransportDriverJourneyR\rdriverJourney\"\xb5\x03\n" +
+	"\x0edriver_journey\x18\x01 \x01(\v2!.SolidarityTransportDriverJourneyR\rdriverJourney\"\xe2\x03\n" +
 	"\x18BookDriverJourneyRequest\x12!\n" +
 	"\fpassenger_id\x18\x01 \x01(\tR\vpassengerId\x12\x1b\n" +
 	"\tdriver_id\x18\x02 \x01(\tR\bdriverId\x12*\n" +
@@ -1272,7 +1280,10 @@ const file_solidarity_transport_proto_rawDesc = "" +
 	"\x0eprice_currency\x18\x06 \x01(\tR\rpriceCurrency\x12+\n" +
 	"\x04data\x18\a \x01(\v2\x17.google.protobuf.StructR\x04data\x12<\n" +
 	"\x1adriver_compensation_amount\x18\b \x01(\x01R\x18driverCompensationAmount\x12@\n" +
-	"\x1cdriver_compensation_currency\x18\t \x01(\tR\x1adriverCompensationCurrency\"R\n" +
+	"\x1cdriver_compensation_currency\x18\t \x01(\tR\x1adriverCompensationCurrency\x12\x1e\n" +
+	"\bgroup_id\x18\n" +
+	" \x01(\tH\x00R\agroupId\x88\x01\x01B\v\n" +
+	"\t_group_id\"R\n" +
 	"\x19BookDriverJourneyResponse\x125\n" +
 	"\abooking\x18\x01 \x01(\v2\x1b.SolidarityTransportBookingR\abooking\"\xef\x01\n" +
 	"%GetSolidarityTransportBookingsRequest\x129\n" +
@@ -1416,6 +1427,7 @@ func file_solidarity_transport_proto_init() {
 	}
 	file_solidarity_transport_types_proto_init()
 	file_solidarity_transport_proto_msgTypes[8].OneofWrappers = []any{}
+	file_solidarity_transport_proto_msgTypes[12].OneofWrappers = []any{}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
diff --git a/servers/grpc/proto/solidarity-transport.proto b/servers/grpc/proto/solidarity-transport.proto
index 739c7b0..a209b77 100644
--- a/servers/grpc/proto/solidarity-transport.proto
+++ b/servers/grpc/proto/solidarity-transport.proto
@@ -90,6 +90,7 @@ message BookDriverJourneyRequest {
     google.protobuf.Struct data = 7;
     double driver_compensation_amount = 8;
     string driver_compensation_currency = 9;
+    optional string group_id = 10;
   }
 
 message BookDriverJourneyResponse {
diff --git a/servers/grpc/server/bookings.go b/servers/grpc/server/bookings.go
index d310fb3..faa11dc 100644
--- a/servers/grpc/server/bookings.go
+++ b/servers/grpc/server/bookings.go
@@ -21,8 +21,9 @@ func (s SolidarityTransportServerImpl) BookDriverJourney(ctx context.Context, re
 	driverCompensationCurrency := req.DriverCompensationCurrency
 	returnWaitingDuration := time.Duration(req.ReturnWaitingDuration)
 	data := req.Data.AsMap()
+	groupId := req.GetGroupId()
 
-	booking, err := s.Handler.BookDriverJourney(passengerId, driverId, journeyId, returnWaitingDuration, priceAmount, priceCurrency, driverCompensationAmount, driverCompensationCurrency, data)
+	booking, err := s.Handler.BookDriverJourney(passengerId, driverId, journeyId, returnWaitingDuration, priceAmount, priceCurrency, driverCompensationAmount, driverCompensationCurrency, data, groupId)
 	if err != nil {
 		log.Error().Err(err).Msg("issue in BookDriverJourney handler")
 		return nil, status.Errorf(codes.Internal, "could not create booking : %v", err)
diff --git a/storage/memory.go b/storage/memory.go
index fe4e282..9ff563f 100644
--- a/storage/memory.go
+++ b/storage/memory.go
@@ -161,3 +161,15 @@ func (s MemoryStorage) UpdateBookingStatus(bookingid string, newStatus string, r
 
 	return nil
 }
+
+func (s MemoryStorage) GetBookingsByGroupId(groupId string) ([]*types.Booking, error) {
+	var bookings []*types.Booking
+
+	for _, booking := range s.Bookings {
+		if booking.GroupId == groupId {
+			bookings = append(bookings, booking)
+		}
+	}
+
+	return bookings, nil
+}
diff --git a/storage/mock.go b/storage/mock.go
index 6ee4f9d..218129a 100644
--- a/storage/mock.go
+++ b/storage/mock.go
@@ -241,6 +241,20 @@ func (m *MockStorage) UpdateBookingStatus(bookingid string, newStatus string, re
 	return nil
 }
 
+func (m *MockStorage) GetBookingsByGroupId(groupId string) ([]*types.Booking, error) {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+
+	var bookings []*types.Booking
+	for _, booking := range m.bookings {
+		if booking.GroupId == groupId {
+			bookings = append(bookings, booking)
+		}
+	}
+
+	return bookings, nil
+}
+
 // Helper methods for testing
 
 // Reset clears all data - useful for test setup
diff --git a/storage/mongodb.go b/storage/mongodb.go
index a33c8fc..8c18fd6 100644
--- a/storage/mongodb.go
+++ b/storage/mongodb.go
@@ -229,3 +229,20 @@ func (s MongoDBStorage) UpdateBookingStatus(bookingid string, newStatus string,
 
 	return nil
 }
+
+func (s MongoDBStorage) GetBookingsByGroupId(groupId string) ([]*types.Booking, error) {
+	filter := bson.M{"groupid": groupId}
+
+	cursor, err := s.Collections.Bookings.Find(context.Background(), filter)
+	if err != nil {
+		return nil, err
+	}
+	defer cursor.Close(context.Background())
+
+	var bookings []*types.Booking
+	if err := cursor.All(context.Background(), &bookings); err != nil {
+		return nil, err
+	}
+
+	return bookings, nil
+}
diff --git a/storage/storage.go b/storage/storage.go
index 55b905a..49937ff 100644
--- a/storage/storage.go
+++ b/storage/storage.go
@@ -23,6 +23,7 @@ type Storage interface {
 	CreateBooking(types.Booking) error
 	GetAllBookings() ([]*types.Booking, error)
 	GetBooking(id string) (*types.Booking, error)
+	GetBookingsByGroupId(groupId string) ([]*types.Booking, error)
 	UpdateBooking(booking types.Booking) error
 	UpdateBookingStatus(bookingid string, newStatus string, reason string) error
 }