It seems I can only switch btw. silent/ringtone on the quicktoggle of the volume control and all other settings need to be changed individually under settings>...
How do I configure (ringtone) profiles in Windows Phone 8? Do I need an app for this?
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Not possible in WP7 or 8, unfortunately.
I am going to develop such an app. It will be in the Windows Phone Store within a month. Please be patient.
I will update my answer here, when it is published.