Template can be defined in DockingManager. The template such as HeaderTemplate, CloseButtonTemplate, MenuButtonTemplate, AwlButtonTemplate can be defined. The following example show a HeaderTemplate in the DockingManager.

<Syncfusion:DockingManager.HeaderTemplate>
<DataTemplate>
<DockPanel LastChildFill="True" >
<Image DockPanel.Dock="Left" Height="14" Width="20" Margin="0,0,5,0" Source="icon.PNG" />
<TextBlock Text="{Binding}" TextTrimming="CharacterEllipsis" />
</DockPanel>
</DataTemplate>
</Syncfusion:DockingManager.HeaderTemplate>