- Download the addon following the provided url
- Install and Activate WPC by following the instructions here
- Go to Plugins > Add new in your WP-admin website
- Click on Upload Plugin then click on Browse... and select the file you've just downloaded
- After the plugin has been installed, click on Activate
To activate the addon on a specific calculator:
- Click on "WooCommerce" > "WooPrice Calculator"
- Click on the "Calculator" tab
- Click on the dropdown menu of your calculator and click on "Table Addon"
- Click on "Activate" to enabled the addon