Display creation in PI Coresight 2014 has not changed substantially from previous versions. Symbols are auto sized based on the size of the browser windows and the number of symbols on the display.
A new alternative you have with PI Coresight 2014 is the ability to import ProcessBook displays and show them in any modern browser, including smart phones and tablets. The ProcessBook display is shown will all the original sizing and placement of symbols or graphics as seen in ProcessBook itself. The picture below is an example of the same ProcessBook display shown on different devices using PI Coresight 2014.
Thank you Tom, there are plan to provide this feature in coming version 2015. Also, what is about Multi-state symbol, is it supported in current version 2014 by using import PI Process Book display.