Note to users of ISL Conference Proxy versions prior to 3.1.0: Customization for ISL Conference Proxy 3.1.0+ differs from previous versions. Previously it was done during the packet creation procedure in the ISL Light web console, but now it is entirely done in the local ISL Conference Proxy administration. Customization is added to the main program on the fly, when you start it through http://localhost:7615/users/programs/ - you can then save the resulting executable for repeated usage or generate it using a link each time.
Note: Before you change a certain customization setting, please check the right-most column that lists all the products (and product versions) that the current setting applies to.