How do I install a LightSpeed plugin?

NOTE 1: This knowledge base only applies to LightSpeed users running LightSpeed eCommerce 3.0 and above.

NOTE 2: It is highly recommended that you upload and manage plugins through an internet browser instead of your LightSpeed Point of Sale.

NOTE 3: It is REQUIRED that you upload the files for the LightSpeed Plugin Installer using BINARY TRANSFER MODE in your FTP client. If you use ASCII, you will get errors when trying to install and activate new plugins.