[ https://issues.jboss.org/browse/DROOLS-3193?page=com.atlassian.jira.plugi... ] Edson Tirelli commented on DROOLS-3193: --------------------------------------- {quote}Regarding the last image you posted, in the current implementation, it is not possible to achieve it (all columns whose instance type is Dispute would get merged together, so there would be only one header row called Dispute and the header row below would be divided into six columns as in the image). You need to introduce an alias to create this structure (such as First dispute, Second dispute, Third dispute). But otherwise, it is a valid grid.{quote} This limitation is fine for now, but we should plan to remove it in the future. From a semantic perspective, it is fine to have multiple anonymous instances of the same type. -- This message was sent by Atlassian Jira (v7.12.1#712002)