Im kind of new to this. .but i was wondering if ill ever get the chance to dual Class Viconia ? she is only a cleric at the moment ... but i would like her to become a mage ... if its possible at which level will it happen ? im clueless

Viconia is a drow and is not eligible to dual class. She will stay what she is throughout the game. Sorry. Course, if you don't mind cheating, you could use Shadow Cheater (Shadow Keeper) to add another class to her character.