Dock the Report Data Pane in Report Designer (SSRS)
Topic Status: Some information in this topic is preview and subject to change in future releases. Preview information describes new features or changes to existing features in Microsoft SQL Server 2016 Community Technology Preview 2 (CTP2).
In Report Designer in SQL Server Data Tools (SSDT), the Report Data pane displays a hierarchical view of data objects that you can use in a report, including data sources, datasets, fields, parameters, and images. Data sources in this view can be embedded or references to shared data sources that are displayed in Solution Explorer.
To display the Report Data pane
In Design view, on the View menu, select Report Data.
To dock the Report Data pane
Grab the title bar of the Report Data pane and start to drag the pane. Docking arrows appear on the design surface.
Drop the Report Data pane onto one of the arrows to dock the pane.
To change the Report Data pane from a docked window to a tabbed window
Right-click the title bar of the Report Data pane and then click Tabbed Document.
To change the Report Data pane from a tabbed window to a docked window
Right-click the Report Data tab and then click Dockable.
To toggle between the last two display states, double-click the title bar of the Report Data pane.