There's in Datadynamic Reporter a fundamental difference between Groups and Target Groups:

+ Groups are created in Editor Mode to group variables under a common name and to make variables easily identifiable and accessed via the group name

+ Target Groups are created in Designer Mode by combining variables with certain criteria, defined by the user using formulas, in order to obtain target groups to produce the desired tables and charts.

Target groups are for this reason visible only in Designer Mode, since they have a pure reporting being.