[Merlinau]

I am completely stumped trying to find out how to reset my 2014 i30 Elite clock for daylight saving time.
when I access 'setting's /Clock the time is displayed with a 12 or 24 hour option, but NO way to adjust the time setting itself.
I've been through the manual and the internet until I'm slilghtly mad.
Anyone able to guide/assist?

[Shambles]

This any use?

Clock out by 1 hour