The supplied Bluetooth and Wifi antennas are small items and can be found within the accessory bag when unboxing the unit, along with the Quick Start Guide and the orange Control Bus cable. An image of the antennas can be found in the manual here.
More information about connecting them for use with WiFi can be found here.
If you are still unable to find the supplied Wifi/Bluetooth antennas after searching within the accessory bag, please do get in touch with our Support team who will be able to assist further.