diff --git a/src/main/java/de/kreth/clubhelperbackend/google/calendar/ClubEvent.java b/src/main/java/de/kreth/clubhelperbackend/google/calendar/ClubEvent.java
index 42d74b2..71377e6 100644
--- a/src/main/java/de/kreth/clubhelperbackend/google/calendar/ClubEvent.java
+++ b/src/main/java/de/kreth/clubhelperbackend/google/calendar/ClubEvent.java
@@ -24,6 +24,12 @@ public class ClubEvent extends BasicItem {
 		return location;
 	}
 
+	@Override
+	public String toString() {
+		return "ClubEvent [Caption=" + getCaption() + ", Start=" + getStart()
+				+ ", location=" + location + "]";
+	}
+
 	public static ClubEvent parse(Event ev) {
 		ClubEvent clubEvent = new ClubEvent();
 		clubEvent.setCaption(ev.getSummary());
@@ -39,7 +45,7 @@ public class ClubEvent extends BasicItem {
 		return clubEvent;
 	}
 
-	private static ZonedDateTime toZoned(Date parse) {
+	public static ZonedDateTime toZoned(Date parse) {
 		if (parse != null) {
 			Instant instant = parse.toInstant();
 			return ZonedDateTime.ofInstant(instant, ZoneId.systemDefault());
diff --git a/src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/MainUi.java b/src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/MainUi.java
index f000335..b775a6f 100644
--- a/src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/MainUi.java
+++ b/src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/MainUi.java
@@ -15,7 +15,6 @@ import org.vaadin.addon.calendar.ui.CalendarComponentEvents;
 import com.vaadin.server.VaadinRequest;
 import com.vaadin.spring.annotation.SpringUI;
 import com.vaadin.ui.HorizontalLayout;
-import com.vaadin.ui.Label;
 import com.vaadin.ui.Notification;
 import com.vaadin.ui.UI;
 
@@ -40,7 +39,6 @@ public class MainUi extends UI {
 	protected void init(VaadinRequest request) {
 
 		HorizontalLayout layout = new HorizontalLayout();
-		layout.addComponent(new Label("Persons found:"));
 
 		List<Person> persons = dao.list();
 		personGrid = new PersonGrid();
@@ -50,6 +48,7 @@ public class MainUi extends UI {
 
 		eventGrid = new EventGrid();
 		eventGrid.setCaption("Termine");
+		eventGrid.addItemClickListener(ev -> showDetails(ev.getItem()));
 
 		dataProvider = new ClubEventProvider();
 		Calendar<ClubEvent> calendar = new Calendar<>(dataProvider)
@@ -66,6 +65,7 @@ public class MainUi extends UI {
 			List<ClubEvent> events = business.loadEvents(request);
 			dataProvider.setItems(events);
 			eventGrid.setItems(events);
+			eventGrid.getDataProvider().refreshAll();
 			System.out.println("Updated data: " + events);
 		});
 		exec.shutdown();
@@ -73,7 +73,14 @@ public class MainUi extends UI {
 
 	private void onItemClick(CalendarComponentEvents.ItemClickEvent event) {
 		ClubEvent ev = (ClubEvent) event.getCalendarItem();
-		Notification.show("Clicked: " + ev);
+		showDetails(ev);
+	}
+
+	private void showDetails(ClubEvent ev) {
+		eventGrid.setVisible(false);
+		personGrid.setVisible(true);
+
+		Notification.show("" + ev);
 	}
 
 	class ClubEventProvider extends BasicItemProvider<ClubEvent> {
diff --git a/src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/components/EventGrid.java b/src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/components/EventGrid.java
index e5f6f7a..2160513 100644
--- a/src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/components/EventGrid.java
+++ b/src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/components/EventGrid.java
@@ -1,5 +1,8 @@
 package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components;
 
+import java.time.format.DateTimeFormatter;
+import java.time.format.FormatStyle;
+
 import com.vaadin.ui.Grid;
 
 import de.kreth.clubhelperbackend.google.calendar.ClubEvent;
@@ -7,9 +10,14 @@ import de.kreth.clubhelperbackend.google.calendar.ClubEvent;
 public class EventGrid extends Grid<ClubEvent> {
 
 	private static final long serialVersionUID = -5435770187868470290L;
+	private final DateTimeFormatter df = DateTimeFormatter
+			.ofLocalizedDate(FormatStyle.MEDIUM);
 
 	public EventGrid() {
-		addColumn(ClubEvent::getStart).setCaption("Start");
+
+		addColumn(ClubEvent::getStart, dt -> {
+			return dt != null ? df.format(dt) : "";
+		}).setCaption("Start");
 		addColumn(ClubEvent::getCaption).setCaption("Bezeichnung");
 		addColumn(ClubEvent::getLocation).setCaption("Ort");
 	}
diff --git a/src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/components/PersonGrid.java b/src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/components/PersonGrid.java
index 2206393..e6b8cb1 100644
--- a/src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/components/PersonGrid.java
+++ b/src/main/java/de/kreth/vaadin/clubhelper/vaadinclubhelper/ui/components/PersonGrid.java
@@ -1,22 +1,55 @@
 package de.kreth.vaadin.clubhelper.vaadinclubhelper.ui.components;
 
 import java.text.DateFormat;
+import java.util.Collection;
 
+import com.vaadin.ui.CheckBox;
+import com.vaadin.ui.ComboBox;
+import com.vaadin.ui.CustomComponent;
 import com.vaadin.ui.Grid;
+import com.vaadin.ui.Grid.SelectionMode;
+import com.vaadin.ui.HorizontalLayout;
+import com.vaadin.ui.VerticalLayout;
 
+import de.kreth.vaadin.clubhelper.vaadinclubhelper.data.GroupDef;
 import de.kreth.vaadin.clubhelper.vaadinclubhelper.data.Person;
 
-public class PersonGrid extends Grid<Person> {
+public class PersonGrid extends CustomComponent {
 
 	private static final long serialVersionUID = -8148097982839343673L;
+
 	private final DateFormat birthFormat = DateFormat
 			.getDateInstance(DateFormat.MEDIUM);
 
+	private final Grid<Person> grid = new Grid<>();
+
+	private CheckBox checkIncluded;
+	private ComboBox<GroupDef> comboGroups;
+
 	public PersonGrid() {
-		addColumn(Person::getPrename).setCaption("Vorname");
-		addColumn(Person::getSurname).setCaption("Nachname");
-		addColumn(Person::getBirth, b -> b != null ? birthFormat.format(b) : "")
+		checkIncluded = new CheckBox("Nur gemeldete");
+		comboGroups = new ComboBox<>("Gruppenfilter");
+
+		HorizontalLayout filters = new HorizontalLayout();
+		filters.addComponents(checkIncluded, comboGroups);
+
+		grid.addColumn(Person::getPrename).setCaption("Vorname");
+		grid.addColumn(Person::getSurname).setCaption("Nachname");
+		grid.addColumn(Person::getBirth,
+				b -> b != null ? birthFormat.format(b) : "")
 				.setCaption("Geburtstag");
+		grid.setSelectionMode(SelectionMode.MULTI);
+
+		VerticalLayout panel = new VerticalLayout();
+		panel.addComponents(filters, grid);
+		setCompositionRoot(panel);
+	}
+
+	public void setItems(Collection<Person> items) {
+		grid.setItems(items);
 	}
 
+	public void setItems(Person... items) {
+		grid.setItems(items);
+	}
 }