Translation of enzyklopädisch

A bystander who watched the entire scene all the time decided to help me. He was an older man, around seventy, but nonetheless he went to the oldest of these kids and slapped him. The boy was sixteen.
After our system update, lessons will be saved for 30 minutes automatically, if you want to save them permanently, you need to press the 'save lesson' button. It than works the same basically.
Luckily for him, his wife stood by him and explained that he was clumsy and that would happen to him all the time. Anyway, it none of our business. We all had dinner afterwards and went to sleep.