Complex sentence: Their first store opened on 16 April 2014 at Emporium Melbourne, Melbourne CBD and their second store opened on 17 September 2014 at Chadstone Shopping Centre, Chadstone.
Split into simpler sentences: Their first store opened on 16 April 2014 at Emporium Melbourne, Melbourne CBD. Their second store opened on 17 September 2014 at Chadstone Shopping Centre, Chadstone.