Interactive Reports creates a page in Letter size (8.5 x 11 inches) and Portrait orientation by default. You can change the page size or orientation in Page Setup.
Change Page Format and Orientation
Change page format
Click the General tab, then click Page Setup.
In the Page Setup dialog box, select a page format.
Optional: Update the margins.
Click OK.
Change page orientation
Click the General tab, then click Page Setup.
In the Page Setup dialog box, select an orientation icon.