Hello Fabrizio,

The functionality I discussed in my previous post - VisibleDateRange will set the first date and depending on your TimescaleBand will show next days or weeks.

If you want to restrict only one week for example you can use TimescaleBand set to "Weeks" and retemplate the TimescaleIntervalPresenter from the primitives namespace:

<ig:XamGantt.Resources>
                <local:CustomConverter x:Key="conv"/>
                <Style TargetType="{x:Type igPrim:TimescaleIntervalPresenter}">
                    <Setter Property="Visibility" Value="{Binding RelativeSource={RelativeSource Self},Converter={StaticResource conv}}"/>
                </Style>
            </ig:XamGantt.Resources>

Using a Converter you can check IntervalInfo.Interval and return Visibility.Visible or Visibility.Collapsed. Note that this will effectively hide all TimescaleIntervals except those return by the Converter.