A family of Microsoft word processing software products for creating web, email, and print documents.
You can add the Right to Left command to the Quick Access Toolbar, if that helps.
In Word, click File > Options > Quick Access Toolbar. Select "All Commands" in the Choose commands from drop down. Locate Right to Left and click the Add button.
By default, the Quick Access Toolbar is shown in Word's title bar, but you can choose to display it below the ribbon instead. There is a check box for that in the dialog box (see the screen shot below).