Log into the broker server and launch the server manager
In the upper right hand corner click on Manage and then on Add Servers
This will bring up the Add Servers window. Leave the Name (CN): section blank and click on Find Now
This will find all of the machines in the domain. Select them all and click the arrow in the middle to select them for the remote management from the Server Manager and click OK
Back in the Server Managers main view click on Remote Desktop Services
Once the Remote Desktop Services console loads (can take a minute or two) click on Collections and in the bottom right under Connections, right click the connection/user you want to Shadow and click Shadow in the sub menu
In the Shadow window that pops up click either View or Control, and select whether to prompt the user for consent and click OK to begin the remote session.