Verb conjugation of "complicate" in English

It means a lot to me to participate and meet other people in this Internet forum. I'll know later if I can move my appointment in order to get together with our visitors from Canada.
I had never heard the phrase before. In America, there are also different idioms than here in England. It seems that the Americans say it differently than we do here in the United Kingdom.
I am a kindergarten teacher for children between age 4 and age 5 and additionally I teach at a school here in Munich: music, painting and handicraft. At the moment just we have holidays.