My buttons

<Grid x:Name="FirstLineRight" Grid.Column="2"
      ColumnDefinitions="auto, auto, auto, auto"
      RowDefinitions="*"
      IsVisible="{Binding IsOpened}">

    <dxe:Chip Text="Sans prix" Margin="0" Padding="10,0"
              BackgroundColor="#3010E010" HeightRequest="30"
              SelectedBackgroundColor="#8010E010"
              IsCheckIconVisible="True"
              IsSelected="{Binding EditingProductPricing.IsPriced, Converter={StaticResource InvertedBoolConverter}}"
              TapCommand="{Binding ToggleIsPricedCommand}" />

    <Button x:Name="ButtonAdd" Grid.Column="1" HeightRequest="30" WidthRequest="30"
                      Command="{Binding AddProductToGroupCommand}"
                      BackgroundColor="Transparent"
                      Margin="5, 0,10,0"
                      Padding="0"
                      ImageSource="{fluent:Icon Icon=Add16}">
        <Button.IsVisible>
            <MultiBinding ConverterParameter='And(x, y)'
                                   Converter="{StaticResource Math}">
                <Binding Path="InitialProductPricing"
                         Converter="{utils:EmptyProductConverter}" />
                <Binding Path="EditingProductPricing"
                         Converter="{utils:NotEmptyProductConverter}" />
            </MultiBinding>
        </Button.IsVisible>
    </Button>
    <Button x:Name="ButtonEdit" Grid.Column="2" HeightRequest="30" WidthRequest="30"
                      Command="{Binding EditProductPricingInGroupCommand}"
                      BackgroundColor="Transparent"
                      Margin="-10, 0,0,0"
                      Padding="0"
                      ImageSource="{fluent:Icon Icon=Pen16}">
        <Button.IsVisible>
            <MultiBinding ConverterParameter='And(x, y)'
                          Converter="{StaticResource Math}">
                <Binding Path="InitialProductPricing"
                         Converter="{StaticResource NotNullConverter}" />
                <Binding Path="EditingProductPricing"
                         Converter="{StaticResource NotNullConverter}" />
            </MultiBinding>
        </Button.IsVisible>
    </Button>
    <Button x:Name="ButtonRemove" Grid.Column="3" HeightRequest="30" WidthRequest="30"
            Command="{Binding RemoveProductFromGroupCommand}"
            BackgroundColor="Transparent"
            Margin="5, 0,0,0"
            Padding="0"
            ImageSource="{fluent:Icon Icon=Subtract16}"
            IsEnabled="{Binding InitialProductPricing, Converter={StaticResource NotNullConverter}}">
    </Button>
</Grid>