Groups and series should be declared and it should allow for no grouping

[edlongman]

For this example I have selected the packets received at a single node, under 4 different interface configurations and with 5 repetitions.

The IDE infers that the series should be "interfaceType" and group should be "replication"

If I remove the "replication" grouping, I expect only 4 bars like the following:

However it won't accept no grouping, giving the error: "Please set both the Groups and Series properties in the dialog - or neither, for automatic setup."
Is this the designed behaviour?
Instead I have to group by "name" or some other parameter that they all share which seems counter intuitive.

Alternatively, I could put the interfaceType as the grouping, but then I have to put some other "universal" parameter in the Series field:

[torokati44]

Your expectation (the middle screenshot) is entirely reasonable, and it should probably work that way.
I think there were some technical reasons for why the current behavior emerged (having to put a universal attribute into the "other" field).