In LiteSpeed Web Server - Through the WebAdmin Console, navigate to Configuration > Server > cache and set 'Storage path' under Cache Storage Settings to something like '/tmp/wpcache/' for example. If the directory does not already exist, create it and make it server readable/writable.
In LiteSpeed Web Server - Under "Cache Policy" set the following: 'Enable Public Cache' - No, 'Check Public Cache' - Yes, 'Ignore Request Cache-Control' - Yes.
In LiteSpeed Web Server - Perform a Graceful Restart.
Upload 'litespeed-cache.zip' to the '/wp-content/plugins/' directory
Disable any other page caches as these will interfere with the LiteSpeed Cache Plugin.
Activate the LiteSpeed Cache plugin through the 'Plugins' screen in WordPress