The installation of the plugin is just like any other plugin installation for WordPress. Login to your WordPress site and go to Plugins > Add New.
At the Install Plugins Page click on Upload from the top navigation and then click on browse.
Go to the location on your computer where you saved the downloaded plugin zip file and upload this zipped file. Make sure to choose proper zip. You can download plugin zip from “Installable WordPress file only” option as shown in below screenshot
Now click on Install Now.
Wait until WordPress has uploaded the file. If it’s done click on Activate Plugin.
Now you should see a message ‘Plugin activated’ at the top of the window.