You can subscribe to the Windcave Payment Processor Integration plugin from the Purchase Subscription screen. You can approach this screen either for the Plugins screen or from the Manage Account section.
If you are coming from the Plugins screen, you need to click on the Activate button on the plugin tile labelled Windcave Payment Processor Integration.
If you are coming from the Manage Account section, you need to navigate to Choose My Subscription section, on the Purchase Subscription screen, and put a tick in the activation checkbox to mark the plugin as Active.
In either case, the application lets you review your order summary before you click on the Confirm & Pay button in the Cart Detail section to process payment.
Once you have subscribed to the Windcave Payment Processor Integration plugin, you need to configure the Windcave payment type in Tagrain and map your Windcave Payment Device with your POS terminal to be able to accept payments.