Software updates - client behaviour

Question

I deployed SUP role and clients in test collection I deployed updates to got their updates. However I noticed two "weird" things on client machines (I am talking about test environment since I am learning SCCM 2012 R2):
Update settings in Control Panel - Windows Update are not grayed-out (in production I have WSUS server and GPO pointing clients to WSUS and these settings are grayed-out - I do not have SCCM in production)
In Software Center user has complete look at update process but e.g. if user picks some update that has been installed and requires restart, in lower-right corner there is button RESTART - I did not try but I assume user (me) could have pressed this
button and in doing so installation of remaining updates would have been interrupted
How to troubleshoot this? I took a look at software updates client settings and I did not notice any settings related to problems I depicted above. In my opinion update settings should have been grayed-out and RESTART button should not have been available before
all updates are installed - then RESTART is inevitable action.

Answer 1

Changes to those settings won't prevent the ConfigMgr client from triggering the WUA agent for the configured scans and installations. If you want to prevent access to those features you can use GPOs.
For a nice blog series about software updates and GPOs, see the following links (it's written for ConfigMgr 2007, but still works the same in ConfigMgr 2012):
http://blog.configmgrftw.com/software-update-management-and-group-policy-for-configmgr-what-else/
http://blog.configmgrftw.com/software-updates-management-and-group-policy-for-configmgr-cont/
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