Calendar, howto change/add alarm time presets, before event?
 

I searched a bit for how I can change or add the settings, when a alarm should go off, lets say 2 hours before an event in my calendar?

As it is now, I can only choose between 'The day before', '3 hours before', '1 hour before' and so on and so forth.

It would be the best of worlds, if I could change the alarm time to whatever I fancy, as it was possible on my last phone, the Nokia E61.