Your drivers can take payment from your customers using the Driver app if necessary and you will be able to determine when that can take place.
Head to Settings > Pickup and Delivery > Driver App > Allow Payment in Driver App, and you can then select from a dropdown of options.
These options will range from 'Pickup and Delivery', 'Delivery Only', 'Pickup Only', and 'Never'. We would recommend ‘Delivery Only’ as the best option.