MedicalService-MultiColumn.xaml

<VerticalStackLayout Spacing="18">

    <BindableLayout.ItemsSource>
        <x:Array Type="{x:Type xs:SelectableModel}">
            <xs:SelectableModel Description="Headache"/>
            <xs:SelectableModel Description="Weakness"/>
        </x:Array>
    </BindableLayout.ItemsSource>

    <BindableLayout.ItemTemplate>
        <DataTemplate x:DataType="{x:Type xs:SelectableModel}">

            <Grid ColumnDefinitions="*, auto"
              Margin="0,0,18,0"
              ColumnSpacing="8">
                <Grid.GestureRecognizers>
                    <TapGestureRecognizer Tapped="TapGestureRecognizer_Tapped"
                          CommandParameter="{Binding .}"
                          />
                </Grid.GestureRecognizers>

                <Label FontSize="Header"
                   HorizontalTextAlignment="End"
                   FontFamily="OpenSansRegular"
                   Text="{Binding Description}"
                   TextColor="#626262"/>

                <Ellipse Grid.Column="1"
                     HorizontalOptions="Center"
                     VerticalOptions="Center"
                     Stroke="#3E0789"
                     StrokeThickness="2"
                     HeightRequest="14"
                     WidthRequest="14"
                     />

                <Ellipse Grid.Column="1"
                     HorizontalOptions="Center"
                     VerticalOptions="Center"
                     Fill="#3E0789"
                     HeightRequest="9"
                     IsVisible="{Binding IsSelected}"
                     WidthRequest="9"
                     />
            </Grid>
        </DataTemplate>
    </BindableLayout.ItemTemplate>
</VerticalStackLayout>