Larian Studios Forums Baldur's Gate III Baldur's Gate III - Build Discussion Multiclassing -> what class to pick first?

Isn't this system more like dual classing. Maybe I'm just old school AD@D gamer but multiclassing involves multiple starting classes from the begining of your choice depending on race. Dual class you pick another class after your principle choosen path? Or are these the new 5th edition changes? I was looking to make my wizzard / cleric but couldn't find my option in game.