API API and Webhooks task guide
8.5.1 Create or Update a Webhook Open Settings > Integrations > Webhooks. Select New Webhook or open an existing subscription. Enter the destination address, choose the business events to send, and complete any secret or signing fields shown. Select Save, then run the available test or validation action before enabling the subscription for live events.
Open Settings > Integrations > Webhooks. Select New Webhook or open an existing subscription. Enter the destination address, choose the business events to send, and complete any secret or signing fields shown. Select Save, then run the available test or validation action before enabling the subscription for live events.
Source: Eprecus user manuals, vol-07-rest-api-webhooks.pdf