Download the plugin package from your Codecanyon account (downloads tab). Unzip to a local drive.
Login to WP Admin, from Dashboard select Plugins > Add New. Right next to Add Plugins screen title spot the button saying “Upload Plugin”. Hit it, browse to the folder you just unzipped to a local drive, select “booxter.zip” – install.
In case you decided to download and install Booxter Property plugin, installation procedure is identical except the fact you won’t need a Codecanyon account. Booxter Property is free.