Sign in to your WordPress website as an administrator. To do this, go to [InsertTheNameOfYourDomain].com/wp-admin then enter your username and password.
In the navigation column on the left, click “Plugins” then “Add New.”
In the search box on the right side of the screen, type “Showcase IDX” then hit Return/Enter. Showcase IDX will be the first result shown. Simply click the “Install Now” button.
The installation screen should display a message letting you know that you’ve successfully installed the plugin (see below). Click “Activate Plugin.”