When you approve the updates (on the server), the updates are downloaded and then based on the GPO settings, are being pushed out to the clients.When the client receives the notification from the server that there are updates waiting (in your case "Auto download and notify for install") it downloads the updates and the yellow triangle notifies the user for installing the updates. Before it hits you, tools like Power Shell and VBScript might appear quaint.

Then, one day, you figure out how one little script can change your life for the better.
That script for me was a tiny but powerful WSUS hack back in 2007.
Please see Print Screen1As per Above Print-screen Computer qnit086v2 has 96% installed updates.
Print Screen2As per Above Print-screen '242 updates has not been installed'.
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WSUS and SUS are great ways of managing the deployment of operating system updates.
It can be a good idea to reset the Automatic Update client if you are experiencing difficulty with contacting the WSUS server with the wuauclt utility.
For more information about wuauclt, see Appendix H: The wuauclt Utility.
If the user does not click on the yellow triangle, WSUS will not show that the updates have been installed.