diff --git a/gui/include/Catalogue/CatalogueEventsTableModel.h b/gui/include/Catalogue/CatalogueEventsTableModel.h
index 0b5f977..de4f031 100644
--- a/gui/include/Catalogue/CatalogueEventsTableModel.h
+++ b/gui/include/Catalogue/CatalogueEventsTableModel.h
@@ -13,6 +13,8 @@ public:
     void setEvents(const QVector<DBEvent> &events);
     DBEvent getEvent(int row) const;
 
+    void addEvent(const DBEvent &events);
+    void removeEvent(const DBEvent &events);
 
     // Model
     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
diff --git a/gui/src/Catalogue/CatalogueEventsTableModel.cpp b/gui/src/Catalogue/CatalogueEventsTableModel.cpp
index 0806e6a..3e423e3 100644
--- a/gui/src/Catalogue/CatalogueEventsTableModel.cpp
+++ b/gui/src/Catalogue/CatalogueEventsTableModel.cpp
@@ -66,6 +66,24 @@ DBEvent CatalogueEventsTableModel::getEvent(int row) const
     return impl->m_Events.value(row);
 }
 
+void CatalogueEventsTableModel::addEvent(const DBEvent &events)
+{
+    beginInsertRows(QModelIndex(), impl->m_Events.count() - 1, impl->m_Events.count() - 1);
+    // impl->m_Events.append(event); TODO
+    endInsertRows();
+}
+
+void CatalogueEventsTableModel::removeEvent(const DBEvent &events)
+{
+    // TODO
+    auto index = -1; // impl->m_Events.indexOf(event);
+    if (index >= 0) {
+        beginRemoveRows(QModelIndex(), index, index);
+        impl->m_Events.removeAt(index);
+        endRemoveRows();
+    }
+}
+
 int CatalogueEventsTableModel::rowCount(const QModelIndex &parent) const
 {
     int r = impl->m_Events.count();
diff --git a/gui/src/Catalogue/CatalogueEventsWidget.cpp b/gui/src/Catalogue/CatalogueEventsWidget.cpp
index 25c496c..16ee9ea 100644
--- a/gui/src/Catalogue/CatalogueEventsWidget.cpp
+++ b/gui/src/Catalogue/CatalogueEventsWidget.cpp
@@ -14,6 +14,27 @@ const auto DATETIME_FORMAT = QStringLiteral("yyyy/MM/dd hh:mm:ss");
 struct CatalogueEventsWidget::CatalogueEventsWidgetPrivate {
 
     CatalogueEventsTableModel *m_Model = nullptr;
+
+    void setEvents(const QVector<DBEvent> &events, QTableView *tableView)
+    {
+        tableView->setSortingEnabled(false);
+        m_Model->setEvents(events);
+        tableView->setSortingEnabled(true);
+    }
+
+    void addEvent(const DBEvent &event, QTableView *tableView)
+    {
+        tableView->setSortingEnabled(false);
+        m_Model->addEvent(event);
+        tableView->setSortingEnabled(true);
+    }
+
+    void removeEvent(const DBEvent &event, QTableView *tableView)
+    {
+        tableView->setSortingEnabled(false);
+        m_Model->removeEvent(event);
+        tableView->setSortingEnabled(true);
+    }
 };
 
 
@@ -24,13 +45,12 @@ CatalogueEventsWidget::CatalogueEventsWidget(QWidget *parent)
 {
     ui->setupUi(this);
 
-    ui->tableView->setDragDropMode(QAbstractItemView::DragDrop);
-    ui->tableView->setDragEnabled(true);
-
     impl->m_Model = new CatalogueEventsTableModel{this};
     ui->tableView->setModel(impl->m_Model);
 
     ui->tableView->setSortingEnabled(true);
+    ui->tableView->setDragDropMode(QAbstractItemView::DragDrop);
+    ui->tableView->setDragEnabled(true);
 
     connect(ui->btnTime, &QToolButton::clicked, [this](auto checked) {
         if (checked) {
@@ -89,7 +109,5 @@ void CatalogueEventsWidget::populateWithCatalogues(const QVector<DBCatalogue> &c
         }
     }
 
-    ui->tableView->setSortingEnabled(false);
-    impl->m_Model->setEvents(events);
-    ui->tableView->setSortingEnabled(true);
+    impl->setEvents(events, ui->tableView);
 }
diff --git a/gui/src/Catalogue/CatalogueSideBarWidget.cpp b/gui/src/Catalogue/CatalogueSideBarWidget.cpp
index 2f6b0cf..9ad1456 100644
--- a/gui/src/Catalogue/CatalogueSideBarWidget.cpp
+++ b/gui/src/Catalogue/CatalogueSideBarWidget.cpp
@@ -21,6 +21,7 @@ struct CatalogueSideBarWidget::CatalogueSideBarWidgetPrivate {
 
     void configureTreeWidget(QTreeWidget *treeWidget);
     QTreeWidgetItem *addDatabaseItem(const QString &name, QTreeWidget *treeWidget);
+    QTreeWidgetItem *getDatabaseItem(const QString &name, QTreeWidget *treeWidget);
     void addCatalogueItem(const DBCatalogue &catalogue, QTreeWidgetItem *parentDatabaseItem);
 };
 
@@ -142,6 +143,20 @@ CatalogueSideBarWidget::CatalogueSideBarWidgetPrivate::addDatabaseItem(const QSt
     return databaseItem;
 }
 
+QTreeWidgetItem *
+CatalogueSideBarWidget::CatalogueSideBarWidgetPrivate::getDatabaseItem(const QString &name,
+                                                                       QTreeWidget *treeWidget)
+{
+    for (auto i = 0; i < treeWidget->topLevelItemCount(); ++i) {
+        auto item = treeWidget->topLevelItem(i);
+        if (item->type() == DATABASE_ITEM_TYPE && item->text(0) == name) {
+            return item;
+        }
+    }
+
+    return nullptr;
+}
+
 void CatalogueSideBarWidget::CatalogueSideBarWidgetPrivate::addCatalogueItem(
     const DBCatalogue &catalogue, QTreeWidgetItem *parentDatabaseItem)
 {