As a broker you can book a load to your private network through your TMS or through DAT One. 

Using a TMS, brokers will select a group of carriers that they want to expose their posting to.  Those postings will be sent to DAT, where DAT will use the email address of the carrier to identify where to send the Private Load.  Carriers identified will now see the load available to them through a DAT load board (TruckersEdge, MembersEdge, DAT One, Power).