When Agency Pulse Portal plugin is active: Auto-created clients appear in Portal client management Customers with orders can login to Portal to view order history Client invoices linked to related orders "Create Portal Clients" setting becomes functional Manual client creation can coexist with auto-created clients When "Create invoice to pay later" is enabled: Orders automatically generate corresponding Invoice posts Invoice shows same items, amounts, taxes as order Payment reminders sent per Email Settings configuration Invoice payment status synced with order payment status Can create additional invoices for same order if needed Shopping cart integrates with Products plugin: All published products available for shopping cart Product prices, taxes, and details pulled from product