[rules-users] Is it possible to select multiple enumerations?

[online.regos at gmail.com]

I am using version 5.3.0.Final and would like to know if anyone knows of a way to select multiple enumerations in a guided decision table. 
Using the <SHIFT> or <CNTL> keys when trying to select multiple  enumerations from a drop down list does not work either.
If anyone has found a way to do this, your advice would be appreciated?