You can access the settings for NexDelivery via Settings > Companion apps > NexDelivery on the Admin Panel.
Show collection signature screens
Toggle this setting off if you do not want the app to show a signature pad on the screen and request a signature when customers come collect their delivery.
Show delivery label print button
Toggle this setting off if you do not want the app to show a Print label button when you are registering new deliveries. This toggle should always be off unless you have a BLE printer connected to NexDelivery.