- Install and activate WooCommerce, then this plugin.
- Click Start scoring in the notice. Scoring runs in the background in small batches. While the screen is open it also works through batches itself and shows a progress bar.
- Open WooCommerce, Customer Segments.
- If your store has long buying cycles, change the scoring under WooCommerce, Settings, Customer segments.

Nothing is scored until you press the button. After the first run scores rebuild nightly, and a customer updates when their order is paid, refunded, cancelled or removed.