So now what we've completed setup for WSUS, now we can move forward with configuring the SUP in CM12.
Note:  This is a lab with a single site server.

In the ConfigMgr console, navigate to Administration, Site Configuration click on Servers and Site Systems Roles.  Right click on the server and choose Add Site System Role.

Just click next to begin to configure the role.


Select the Software Update Point and then Next.


If you are using a proxy, you can enter that information here.  Since I am running this in a lab environment, I'll leave the default and continue.


Next you want to check the box Use this server as the active software update point, obviously ;-)


I took default settings here.


Check the boxes Enable Synchronization on a schedule and Alert when synchronization fails on any site in the hierarchy.  I decided to check these so my lab automatically syncs every week and I don't have to think about it.


Select the proper options for your environment.


I removed selections for older systems as I only use W7 clients in my lab. 


Trust me, I did select English here but I got trigger happy with the print screen.


Green check marks are always good!


To check on the sync progress, you can view the wsyncmgr.log file.