diff --git a/BFR/MainWindow.xaml b/BFR/MainWindow.xaml
index 001aa27..01bcc86 100644
--- a/BFR/MainWindow.xaml
+++ b/BFR/MainWindow.xaml
@@ -2,6 +2,7 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:ops="clr-namespace:BFR.Operations;assembly=BFR"
         mc:Ignorable="d" MinWidth="720" MinHeight="480"
         x:Class="BFR.MainWindow"
         Title="BFR">
@@ -16,13 +17,13 @@
         <!-- Filters -->
         <Grid Grid.Row="1" Grid.ColumnSpan="3" ColumnDefinitions="auto,*,auto,*,auto,auto,auto,auto" IsVisible="{Binding #FilterExpander.IsExpanded}">
           <TextBlock Grid.Column="0" Text="Extension:"/>
-          <TextBox Grid.Column="1" Text="{Binding FilterExtension}" KeyUp="FilterChangedAny"/>
+          <TextBox Grid.Column="1" Text="{Binding FilterExtension}" KeyUp="FilterChanged"/>
           <TextBlock Grid.Column="2" Text="Name:"/>
-          <TextBox Grid.Column="3" Text="{Binding FilterPattern}" KeyUp="FilterChangedAny"/>
+          <TextBox Grid.Column="3" Text="{Binding FilterPattern}" KeyUp="FilterChanged"/>
           <TextBlock Grid.Column="4" Text="Full Name:"/>
-          <CheckBox Grid.Column="5" IsChecked="{Binding FilterFullName}" Click="FilterChangedAny"/>
+          <CheckBox Grid.Column="5" IsChecked="{Binding FilterFullName}" Click="FilterChanged"/>
           <TextBlock Grid.Column="6" Text="Regex:"/>
-          <CheckBox Grid.Column="7" IsChecked="{Binding FilterRegex}" Click="FilterChangedAny" Margin="4,4,5,4"/>
+          <CheckBox Grid.Column="7" IsChecked="{Binding FilterRegex}" Click="FilterChanged" Margin="4,4,5,4"/>
         </Grid>
       </Grid>
     </Border>
@@ -51,16 +52,16 @@
     <!-- Middle Section (Operations, Controls) -->
     <Grid Grid.Row="2" Grid.Column="1" RowDefinitions="*,auto,auto" Classes="StyleBorders">
       <!-- Operations ListBox -->
-      <ListBox Grid.Row="0"/>
+      <ListBox Grid.Row="0" Items="{Binding Operations}" Name="OperationsListBox" SelectedIndex="{Binding SelectedOperation}"/>
       
       <!-- Operations Controls -->
       <Border Grid.Row="1" Classes="ConnectUp">
         <Grid ColumnDefinitions="auto,*,auto,auto,auto">
           <TextBlock Grid.Column="0" Text="New:"/>
-          <ComboBox Grid.Column="1"/>
-          <Button Grid.Column="2" Content=" + "/>
-          <Button Grid.Column="3" Content=" - "/>
-          <ButtonSpinner Grid.Column="4"/>
+          <ComboBox Grid.Column="1" Items="{Binding OperationTypes}" SelectedIndex="{Binding SelectedOperationType}"/>
+          <Button Grid.Column="2" Content=" + " Command="{Binding AddOperation}"/>
+          <Button Grid.Column="3" Content=" - " Command="{Binding RemoveOperation}"/>
+          <ButtonSpinner Grid.Column="4" Spin="MoveOperation"/>
         </Grid>
       </Border>
       
@@ -75,6 +76,7 @@
   </Grid>
 
   <Window.Styles>
+    <!-- General Styling-->
     <Style Selector="Grid > Expander">
       <Setter Property="Margin" Value="4"/>
     </Style>
@@ -120,5 +122,41 @@
     <Style Selector="Border.ConnectUp">
       <Setter Property="Margin" Value="4,-5,4,4"/>
     </Style>
+
+    <!-- Operation Styles -->
+    <Style Selector="Expander.OperationExpander">
+      <Setter Property="Header">
+        <Template>
+          <Grid ColumnDefinitions="auto,*,auto">
+            <CheckBox  Grid.Column="0" Margin="0,0,8,0" IsChecked="{Binding IsEnabled}" Command="{Binding $parent[6].DataContext.Preview}"/>
+            <TextBlock Grid.Column="1" Margin="0,0,8,0" Text="{Binding Name}"/>
+            <Grid Grid.Column="2" ToolTip.Tip="{Binding Error}" IsVisible="{Binding !!Error.Length}">
+              <Ellipse   Width="18" Height="18" Margin="0" Stroke="DarkRed" StrokeThickness="2"/>
+              <TextBlock Width="18" Height="18" Margin="0" Foreground="DarkRed" Text="!" FontWeight="Black" TextAlignment="Center"/>
+            </Grid>
+          </Grid>
+        </Template>
+      </Setter>
+    </Style>
   </Window.Styles>
+
+  <Window.DataTemplates>
+    <!-- Operation Type (For the selector) -->
+    <DataTemplate DataType="{x:Type ops:OperationType}">
+      <TextBlock Text="{Binding Name}"/>
+    </DataTemplate>
+
+    <!-- Operations -->
+    <DataTemplate DataType="{x:Type ops:Overwrite}">
+      <Expander Classes="OperationExpander">
+        <Grid ColumnDefinitions="auto,*" RowDefinitions="*,*">
+          <TextBlock Grid.Row="0" Text="Replacement:"/>
+          <TextBox Grid.Row="0" Text="{Binding Replacement}" KeyUp="PreviewChanged"/>
+          <TextBlock Grid.Row="1" Text="Full Name:"/>
+          <CheckBox Grid.Row="1" IsChecked="{Binding FullName}" Click="PreviewChanged"/>
+        </Grid>
+      </Expander>
+    </DataTemplate>
+  </Window.DataTemplates>
+
 </Window>
diff --git a/BFR/MainWindow.xaml.cs b/BFR/MainWindow.xaml.cs
index 325366b..7d9c3c4 100644
--- a/BFR/MainWindow.xaml.cs
+++ b/BFR/MainWindow.xaml.cs
@@ -25,8 +25,8 @@ namespace BFR
             Filter();
         }
 
-        public void FilterChangedAny(object sender, KeyEventArgs e) => Filter();
-        public void FilterChangedAny(object sender, RoutedEventArgs e) => Filter();
+        public void FilterChanged(object sender, KeyEventArgs e) => Filter();
+        public void FilterChanged(object sender, RoutedEventArgs e) => Filter();
         public void Filter()
         {
             // Filter all files in the directory for those satisfying the given filters
@@ -37,6 +37,10 @@ namespace BFR
             Preview();
         }
 
+        public void PreviewChanged(object sender, KeyEventArgs e) => Preview();                       // TextBox.KeyUp
+        public void PreviewChanged(object sender, RoutedEventArgs e) => Preview();                    // CheckBox.Click
+        public void PreviewChanged(object sender, SelectionChangedEventArgs e) => Preview();          // ComboBox.SelectionChanged
+        public void PreviewChanged(object sender, NumericUpDownValueChangedEventArgs e) => Preview(); // NumericUpDown.ValueChanged
         public void Preview()
         {
             // Reset all files to how they currently exist
@@ -51,6 +55,32 @@ namespace BFR
             Files.ReplaceAll(new List<FileModel>(Files));
         }
 
+        public void AddOperation()
+        {
+            Operations.Insert(
+                SelectedOperation >= 0 ? SelectedOperation + 1 : Operations.Count,
+                OperationTypes[SelectedOperationType].Create());
+            Preview();
+        }
+
+        public void RemoveOperation()
+        {
+            if (SelectedOperation >= 0)
+                Operations.RemoveAt(SelectedOperation);
+            else Operations.RemoveAt(0);
+            Preview();
+        }
+
+        public void MoveOperation(object sender, SpinEventArgs e)
+        {
+            if (Operations.Count > 1)
+                if (e.Direction == SpinDirection.Increase && SelectedOperation > 0)
+                    Operations.Move(SelectedOperation, SelectedOperation - 1);
+                else if (e.Direction == SpinDirection.Decrease && SelectedOperation < Operations.Count - 1)
+                    Operations.Move(SelectedOperation, SelectedOperation + 1);
+            Preview();
+        }
+
         public MainWindow() => InitializeComponent();
         private void InitializeComponent()
         {
diff --git a/BFR/MainWindowUIProperties.cs b/BFR/MainWindowUIProperties.cs
index 8cb8e42..f381cf5 100644
--- a/BFR/MainWindowUIProperties.cs
+++ b/BFR/MainWindowUIProperties.cs
@@ -16,6 +16,13 @@ namespace BFR
         public AvaloniaList<FileModel> AllFiles { get; } = new AvaloniaList<FileModel>();
         public AvaloniaList<FileModel> Files { get; } = new AvaloniaList<FileModel>();
         public AvaloniaList<Operation> Operations { get; } = new AvaloniaList<Operation>();
+        public int SelectedOperation { get; set; }
+        
+        public int SelectedOperationType { get; set; } = 0;
+        public OperationType[] OperationTypes { get; } = new[]
+        {
+            OperationType.Make<Overwrite>()
+        };
 
         // Filters
         public string FilterExtension { get; set; } = "";
diff --git a/BFR/Operations/Operation.cs b/BFR/Operations/Operation.cs
index 03fb0aa..b536ed1 100644
--- a/BFR/Operations/Operation.cs
+++ b/BFR/Operations/Operation.cs
@@ -1,6 +1,7 @@
 using System;
-using System.Collections.Generic;
 using System.Linq;
+using System.Collections.Generic;
+
 using Avalonia;
 
 using BFR.DataModels;
@@ -24,8 +25,9 @@ namespace BFR.Operations
             var backup = files.Select(file => file.Path).ToList();
             try
             {
-                ApplyToInternal(files); // Try to apply operation
-                Error = "";             // If successul, remove any previous error
+                if(IsEnabled)
+                    ApplyToInternal(files); // Try to apply operation
+                Error = "";                 // If successul, remove any previous error
             }  
             catch (OperationException e) { Error = e.Message; } // If expected, show user a concise and descriptive message
             catch (Exception e) { Error = $"Unexpected {e}"; }  // If not, hint with the exception thrown that this is unexpected behaviour