diff --git a/pms/models/pms_reservation.py b/pms/models/pms_reservation.py
index 7af48e7a0..47b514d7d 100644
--- a/pms/models/pms_reservation.py
+++ b/pms/models/pms_reservation.py
@@ -735,7 +735,7 @@ class PmsReservation(models.Model):
                 )
             elif leftover_unassigneds_count > 0:
                 for i in range(0, leftover_unassigneds_count):
-                    unassigned_checkins[i].sudo().unlink()
+                    reservation.checkin_partner_ids = [(2, unassigned_checkins[i].id)]
             elif reservation.adults > len(reservation.checkin_partner_ids):
                 checkins_lst = []
                 count_new_checkins = reservation.adults - len(
@@ -752,6 +752,8 @@ class PmsReservation(models.Model):
                         )
                     )
                 reservation.checkin_partner_ids = checkins_lst
+            elif reservation.adults == 0:
+                reservation.checkin_partner_ids = False
 
     @api.depends("checkin_partner_ids", "checkin_partner_ids.state")
     def _compute_count_pending_arrival(self):
diff --git a/pms/security/ir.model.access.csv b/pms/security/ir.model.access.csv
index 2587b5b9b..56d958429 100644
--- a/pms/security/ir.model.access.csv
+++ b/pms/security/ir.model.access.csv
@@ -7,7 +7,7 @@ user_access_pms_reservation_line,user_access_pms_reservation_line,model_pms_rese
 user_access_room_closure_reason,user_access_room_closure_reason,model_room_closure_reason,pms.group_pms_user,1,0,0,0
 user_access_pms_service_line,user_access_pms_service_line,model_pms_service_line,pms.group_pms_user,1,1,1,1
 user_access_pms_board_service,user_access_pms_board_service,model_pms_board_service,pms.group_pms_user,1,0,0,0
-user_access_pms_checkin_partner,user_access_pms_checkin_partner,model_pms_checkin_partner,pms.group_pms_user,1,1,1,0
+user_access_pms_checkin_partner,user_access_pms_checkin_partner,model_pms_checkin_partner,pms.group_pms_user,1,1,1,1
 user_access_pms_room_type_class,user_access_pms_room_type_class,model_pms_room_type_class,pms.group_pms_user,1,0,0,0
 user_access_pms_room,user_access_pms_room,model_pms_room,pms.group_pms_user,1,0,0,0
 user_access_shared_pms_room,user_access_pms_shared_room,model_pms_shared_room,pms.group_pms_user,1,0,0,0
@@ -33,7 +33,7 @@ manager_access_pms_reservation_line,manager_access_pms_reservation_line,model_pm
 manager_access_room_closure_reason,manager_access_room_closure_reason,model_room_closure_reason,pms.group_pms_manager,1,1,1,1
 manager_access_pms_service_line,manager_access_pms_service_line,model_pms_service_line,pms.group_pms_manager,1,1,1,1
 manager_access_pms_board_service,manager_access_pms_board_service,model_pms_board_service,pms.group_pms_manager,1,1,1,1
-manager_access_pms_checkin_partner,manager_access_pms_checkin_partner,model_pms_checkin_partner,pms.group_pms_manager,1,1,1,0
+manager_access_pms_checkin_partner,manager_access_pms_checkin_partner,model_pms_checkin_partner,pms.group_pms_manager,1,1,1,1
 manager_access_pms_room_type_class,manager_access_pms_room_type_class,model_pms_room_type_class,pms.group_pms_manager,1,1,1,1
 manager_access_pms_room,manager_access_pms_room,model_pms_room,pms.group_pms_manager,1,1,1,1
 manager_access_pms_shared_room,manager_access_pms_shared_room,model_pms_shared_room,pms.group_pms_manager,1,1,1,1