Index: firmware/App/Modes/OperationModes.h
===================================================================
diff -u -r8bd1ae47aa13a843aa8abd6321ddc050deacb4a6 -rcd5be724d5a3ba7457e761191d82f278654d7f5c
--- firmware/App/Modes/OperationModes.h	(.../OperationModes.h)	(revision 8bd1ae47aa13a843aa8abd6321ddc050deacb4a6)
+++ firmware/App/Modes/OperationModes.h	(.../OperationModes.h)	(revision cd5be724d5a3ba7457e761191d82f278654d7f5c)
@@ -1,14 +1,14 @@
 /**************************************************************************
 *
-* Copyright (c) 2019-2021 Diality Inc. - All Rights Reserved.
+* Copyright (c) 2019-2024 Diality Inc. - All Rights Reserved.
 *
 * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
 * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
 *
 * @file    OperationModes.h
 *
-* @author  (last)      Sean Nash
-* @date    (last)      11-Aug-2021
+* @author  (last)      Michael Garthwaite
+* @date    (last)      14-Jun-2023
 *
 * @author  (original)  Dara Navaei
 * @date    (original)  05-Nov-2019
@@ -31,6 +31,8 @@
 
 // ********** public definitions **********
 
+#define NO_SUB_STATE    0xFF ///< value for when submode does not have specific substates and is not applicable.
+
 /// Payload record structure for op mode broadcast message
 typedef struct
 {
@@ -45,7 +47,14 @@
 void requestNewOperationMode( HD_OP_MODE_T newMode );               // Request a transition to a new operation mode
 HD_OP_MODE_T getCurrentOperationMode( void );                       // Get the current operation mode
 HD_OP_MODE_T getPreviousOperationMode( void );                      // Get the previous operation mode
+U32  getCurrentSubMode( void );                                     // Get the current sub-mode
 void initiateAlarmAction( ALARM_ACTION_T action );                  // Initiate an alarm or alarm recovery action according to current op mode
+CONFIRMATION_REQUEST_STATUS_T getConfirmationRequestStatus( GENERIC_CONFIRM_ID_T requestID );                // Get the current confirmation request status
+void setConfirmationRequestStatus( GENERIC_CONFIRM_ID_T requestID, CONFIRMATION_REQUEST_STATUS_T status );   // Set the confirmation request status
+GENERIC_CONFIRM_ID_T addConfirmationRequest( GENERIC_CONFIRM_ID_T requestID, GENERIC_CONFIRM_COMMAND_T requestType, U32 rejectReason );  // Add a new confirmation request
+void setCurrentSubState( U32 subState );                            // Set the current substate.
+void setCurrent4thLevelState( U32 state );                          // Set the current 4th level state.
+void sendOperationStatusEvent( void );                              // Constructs and sends operation status event
 
 BOOL testSetOperationMode( HD_OP_MODE_T newMode );                  // Force transition to a given mode (if allowed)
 BOOL testSetOpModePublishIntervalOverride( U32 ms );