The issue here is that the Approval Rules tab does not appear in the Company section in the Customer Account Menu when the Architect logs in using the Company Administrator account. This is because the Approval Rules feature requires two settings to be enabled: the Purchase Orders feature and the Purchase Order payment method. The solution is to set ‘Enable Purchase Orders’ in the B2B Admin to TRUE and make sure that the ‘Purchase Order’ payment method is active. This will allow the Architect to create and manage Approval Rules for orders.

References: https://experienceleague.adobe.com/docs/commerce-admin/b2b/purchase-orders/account-dashboard-approval-rules.html?lang=en#account-dashboard 1 https://experienceleague.adobe.com/docs/commerce-admin/b2b/purchase-orders/purchase-order-payment-method.html?lang=en#payment-method 2