> ## Documentation Index > Fetch the complete documentation index at: https://developer.hellgate.io/llms.txt > Use this file to discover all available pages before exploring further. # Processing > Configure integrations, payment flows, and the flow matrix in the Commerce Dashboard. ## Integrations Integrations settings Integrations connect your account to payment processors (PSPs). By default, the **SF Test-Acquirer** is configured for new Sandbox accounts for deterministic testing. You can add as many integrations as you need. ### List of integrations Integrations list in Commerce Dashboard ### Create a new integration Click **Add integration** (or the equivalent button) to add a processor. Add new integration – processor selection The list of available processors depends on the Hellgate backend your account uses. ### Edit an integration Click an integration in the list to edit it. Edit integration form The form below **Name** and **Processor** depends on the processor. For SF Test Acquirer you can set deterministic test behaviour; for external PSPs you typically configure base URL and credentials. ## Flows Hellgate Commerce supports **canonical flows** (standard payment patterns) and **custom flows** (e.g. for preprocessing). The diagram below shows how flows fit into payment handling. Payment flow: preprocessing and processing stages Flows settings ### Canonical flows Canonical flows tab List of canonical payment flows Click a flow to see its steps and behaviour. #### Authorize only Authorize a payment without capturing. Authorize-only flow diagram #### Authorize with fallback Authorize with one PSP and fall back to another on failure. Authorize with fallback flow diagram #### Capture Capture a previously authorized payment. Capture flow diagram #### Charge (two-step) Authorize and capture in one flow. Charge two-step flow diagram #### Reject No transaction is sent to a processor; the payment request is failed (useful for reject rules). Reject flow diagram #### Void (open) Void a payment that was never authorized. Void open flow diagram #### Void (authorized) Cancel an authorized payment, then void it. Void after cancel flow diagram ### Custom flows Custom flows (preprocessing) tab New accounts start with an empty list. You can add custom flows as sequences of steps, with branching based on success or failure. Empty custom flows list Configure custom preprocessing flow ## Flow matrix Flow matrix The flow matrix defines which flows run in **pre-processing** and **processing**, and which integration is used. ### Pre-processing flow matrix Pre-processing flow matrix ### Processing flow matrix The processing matrix always has a default rule that runs authorization with the SF Test Acquirer. You can add rules to route specific payments to other flows or integrations. Processing flow matrix with default rule ### Adding and editing rules Each rule matches payment data to conditions and assigns flows for the processing steps, plus the integration to use. Flow matrix rule configuration