expand guidance

windows/deployment/deploy-windows-mdt/deploy-a-windows-10-image-using-mdt.md

@@ -625,7 +625,7 @@ The Event Viewer showing a successful deployment of PC0005.
 
 ## Multicast deployments
 
-Multicast deployment allows for image deployment with reduced network load during simultaneous deployments. Multicast is a useful operating system deployment feature in MDT deployments, however it is important to ensure that your network supports it and is designed for it.
+Multicast deployment allows for image deployment with reduced network load during simultaneous deployments. Multicast is a useful operating system deployment feature in MDT deployments, however it is important to ensure that your network supports it and is designed for it. If you have a limited number of simultaneous deployments, you probably do not need to enable multicast.
 
 ### Requirements
 

windows/deployment/deploy-windows-mdt/refresh-a-windows-7-computer-with-windows-10.md

@@ -80,6 +80,9 @@ It is also assumed that you have a domain member client computer named PC0001 in
  
 ### Upgrade (refresh) a Windows 7 SP1 client
 
+>[!IMPORTANT]
+>Domain join details [specified in the deployment share rules](deploy-a-windows-10-image-using-mdt.md#configure-the-rules) will be used to rejoin the computer to the domain during the refresh process.  If the Windows 7 client is domain-jonied in a different OU than the one specified by MachineObjectOU, the domain join process will initially fail and then retry without specifying an OU. If the domain account that is specified (ex: MDT_JD) has [limited permissions](deploy-a-windows-10-image-using-mdt.md#step-1-configure-active-directory-permissions) then the domain join will ultimately fail and the previous computer object will be orphaned. In the current guide, computer objects should be located in Contoso > Computers > Workstations.
+
 1. On PC0001, sign in as **contoso\\Administrator** and start the Lite Touch Deploy Wizard by opening **\\\\MDT01\\MDTProduction$\\Scripts\\Litetouch.vbs**. 
 2. Complete the deployment guide using the following settings:
     
@@ -97,10 +100,16 @@ It is also assumed that you have a domain member client computer named PC0001 in
    * Updates the operating system using your local Windows Server Update Services (WSUS) server.
    * Restores user settings and data using USMT.
 
-![Computer refresh](../images/fig2-taskseq.png "Start the computer refresh")
+ ![Computer refresh](../images/fig2-taskseq.png "Start the computer refresh")
 
 Starting the computer refresh from an online Windows 7 SP1 client.
 
+5. If desired, monitor progress of the deployment using the deployment workbench on MDT01. See the following example:
+
+ ![monitor deployment](../images/monitor-pc0001.png)
+
+
+
 ## Related topics
 
 [Get started with the Microsoft Deployment Toolkit (MDT)](get-started-with-the-microsoft-deployment-toolkit.md)<br>