- Unzip the folder "charts" in your site's packages/ directory.
- Login to your site as an administrator.
- Find the Extend concrete5 -> Add Functionality page in your dashboard.
- Find this package in the list of packages awaiting installation.
- Click the "install" button.
A new block called "Charts" will be created. You will see it in the list of all blocks installed on your website, in the section "Other".