eazyBI imports data from one Insight schema only. There is a feature request on the eazyBI backlog to support several object shemas, but we are still looking for a convenient way to support such use case.
Please see the related community post here:
If the objects are in the same schema, then you can retrieve linked object names and other parameters using functions GetLinkedMember() and few other member functions. In this community post is described a use case: