Index: sources/gui/qml/pages/treatment/adjustments/TreatmentAdjustmentDuration.qml
===================================================================
diff -u -r56e378f7504701b9e9a9dccaf205aef2fd52c58e -r2ef03b2ce51b4dc507f66e9671953a8e0824bde9
--- sources/gui/qml/pages/treatment/adjustments/TreatmentAdjustmentDuration.qml	(.../TreatmentAdjustmentDuration.qml)	(revision 56e378f7504701b9e9a9dccaf205aef2fd52c58e)
+++ sources/gui/qml/pages/treatment/adjustments/TreatmentAdjustmentDuration.qml	(.../TreatmentAdjustmentDuration.qml)	(revision 2ef03b2ce51b4dc507f66e9671953a8e0824bde9)
@@ -1,15 +1,15 @@
 /*!
  *
- * Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
+ * Copyright (c) 2020-2024 Diality Inc. - All Rights Reserved.
  * \copyright
  * 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 TreatmentAdjustmentDuration.qml
- * \author (last) Behrouz NemaiPour
- * \date (last) 18-Jun-2020
- * \author (original) Behrouz NematiPour
- * \date (original) 27-Apr-2020
+ * \file    TreatmentAdjustmentDuration.qml
+ * \author  (last)      Vy
+ * \date    (last)      11-May-2023
+ * \author  (original)  Behrouz NematiPour
+ * \date    (original)  27-Apr-2020
  *
  */
 
@@ -29,7 +29,7 @@
 TreatmentAdjustmentBase { id: _root
     contentItem.objectName: "TreatmentAdjustmentDuration"  //SquishQt testability
 
-    /* -- */ property alias durationValue   : _durationSlider.value
+    readonly property real  durationValue   : _durationSlider.value
     readonly property alias durationMinimum : _durationSlider.minimum
     readonly property alias durationMaximum : _durationSlider.maximum
     readonly property alias durationStep    : _durationSlider.step
@@ -39,28 +39,45 @@
 
     property int   textWidth       : 200
 
+    // Due to how the slider is set up, a setter function is needed to set the slider value
+    function setDurationValue(value) {
+        _durationSlider.reset(value)
+    }
+
     titleText: qsTr("TREATMENT DURATION")
 
-    Column { id : _column
-        spacing: 65
+    Item { id : _container
+        readonly property int sideMarginSize: Variables.headerButtonsMargin + Variables.confirmButtonWidth/2 - _durationSliderArrows.width/2 // Centers on the confirmButton
+        width   : _root.width
+        height  : 200
         anchors.centerIn: parent
+
         TimeText { id: _currentTimeText
             seconds: vTreatmentTime.time_Elapsed
             secondsVisible: true
             textPixelSize: Fonts.fontPixelDurationCurTime
             anchors.horizontalCenter: parent.horizontalCenter
+            anchors.top: _container.top
+            anchors.bottom: _durationSlider.top
+            anchors.bottomMargin: 65
         }
         Slider { id : _durationSlider
-            anchors.horizontalCenter: parent.horizontalCenter
-            width   : 880
-            height  :   5
+            // The distance from parent's right side to the rightmost of slider - with slider arrows and spacings considered
+            readonly property int sliderAndArrowSpacing : Variables.sliderAdjustButtonSpacing + _durationSlider.handler.width/2
+            readonly property int distanceFromSide      : _durationSlider.sliderAndArrowSpacing + _durationSliderArrows.width + _container.sideMarginSize
+            width   : _container.width - (distanceFromSide * 2) // determine the size of slider to center
             minimum : vTreatmentRanges.treatmentRanges_Duration_Min //  in Minutes
             maximum : vTreatmentRanges.treatmentRanges_Duration_Max //  in Minutes
             step    : Variables.durationResolution
-            stepSnap: true
-            minText.visible: false
-            maxText.visible: false
-            ticks: true
+            stepSnap        : true
+            minText.visible : false
+            maxText.visible : false
+            ticks           : true
+
+            anchors.right       : _durationSliderArrows.left
+            anchors.rightMargin : _durationSlider.sliderAndArrowSpacing
+            anchors.bottom      : _container.bottom
+
             TimeText { id: _durationText
                 seconds: 60 * _durationSlider.value // in Minutes => to Seconds
                 secondsVisible: false
@@ -73,5 +90,15 @@
                 }
             }
         }
+        SliderArrows{ id: _durationSliderArrows
+            visible : true
+            anchors.verticalCenter  : _durationSlider.verticalCenter
+            anchors.right           : _container.right
+            anchors.rightMargin     : _container.sideMarginSize
+
+            onIncrementValue        : _durationSlider.incrementValue(true)
+            onDecrementValue        : _durationSlider.decrementValue(true)
+        }
     }
+
 }