Hi,
There is a limitation in eazyBI not allowing to create new dimensions in the standard Jira Issues data model (cube). The additional data can be imported as new properties to the existing dimensions: https://docs.eazybi.com/eazybijira/data-import/jira-issues-import/additional-data-import-into-jira-issues-cube
In your case the data mapping could look like this:
Kindly,
Janis, eazyBI support