You can specify whether a report uses a built-in RDLC or Word report layout as the default layout.
To specify the default report layout
In the development environment, on the Tools menu, choose Object Designer.
In Object Designer, choose Report, select the report that you want to modify, and then choose Design.
In Report Dataset Designer, select a blank row, and then on the View menu, choose Properties.
In the Report - Properties window, set the DefaultLayout property to RDLC or Word.
Save and compile the report.