Yes, share your receipt email or order details with them and ask them to collect the food at the restaurant at your estimated pickup time.
Your order can be collected at the designated pickup area under the same name shown in the receipt email (or under the phone number at some restaurants). If asked, they can show the restaurant staff the receipt email.
Before leaving, they should check the order. If something is wrong, they can let the restaurant staff know so that staff can help resolve the issue.
There is no need to confirm the pickup in BMW VoiceOrder.