There are four books in this series, each following one of the main characters from The Circle of Magic quartet and set in different parts of the Emelan world.
They are:
Magic Steps (Sandry and Pasco Acalon) set in Summersea Street Magic (Briar Moss and Evvy) set in Chammur Cold Fire (Daja Kisubo and Niamara Bancanor and Jorality Bancanor) set in Kugisko Shatterglass (Trisana Chandler and Kethlun Warder) set in Tharios