Index: Common.h
===================================================================
diff -u -r521164a5f1e660c5bf512f656635ce09e2fc58b7 -r835011262b104e54177237c0a30707c0769aba17
--- Common.h	(.../Common.h)	(revision 521164a5f1e660c5bf512f656635ce09e2fc58b7)
+++ Common.h	(.../Common.h)	(revision 835011262b104e54177237c0a30707c0769aba17)
@@ -7,8 +7,8 @@
 *
 * @file    Common.h
 *
-* @author  (last)      Sean Nash
-* @date    (last)      07-Mar-2023
+* @author  (last)      Michael Garthwaite
+* @date    (last)      08-Mar-2023
 *
 * @author  (original)  Sean
 * @date    (original)  04-Feb-2020
@@ -387,6 +387,52 @@
     BOOL useLastTrimmerHeaterDC;                ///< Use last trimmer heater duty cycle flag.
 } DG_SWITCH_RSRVRS_CMD_T;
 
+/// DG change valve settings command structure
+typedef struct
+{
+    U32 valveSettingCmd;                         ///< DG valve setting command.
+} DG_VALVE_SETTING_CMD_REQUEST_T;
+
+/// DG fill command structure
+typedef struct
+{
+    U32 fillToVolMl;                            ///< fill to volume in mL.
+    U32 cmd;                                    ///< DG cmd.
+    F32 targetFlowRateLPM;                      ///< target flow rate in LPM.
+} DG_FILL_CMD_T;
+
+/// DG start stop command structure
+typedef struct
+{
+    BOOL start;                                 ///< DG start stop cmd.
+} DG_START_STOP_TX_CMD_REQUEST_T;
+
+/// DG start stop trimmer heater command structure
+typedef struct
+{
+    BOOL start;                                 ///< DG start stop trimmer heater.
+} DG_START_STOP_TRIMMER_HEATER_CMD_T;
+
+typedef struct
+{
+    BOOL start;                                 ///< DG start stop flush mode.
+} DG_FLUSH_MODE_CMD_T;
+
+typedef struct
+{
+    BOOL start;                                 ///< DG start stop heat disinfection mode.
+} DG_HEAT_DISINFECTION_MODE_CMD_T;
+
+typedef struct
+{
+    BOOL start;                                 ///< DG start stop chem disinfection mode.
+} DG_CHEM_DISINFECTION_MODE_CMD_T;
+
+typedef struct
+{
+    U32 cmd;                                    ///< DG sample water command.
+} DG_SAMPLE_WATER_CMD_REQUEST_T;
+
 #pragma pack(push, 1)
 /// DG usage info structure.
 typedef struct