It would be useful to be able to mark each child as belonging to a Services family.
I have created mine as an intervention group in the meantime.
Unfortunately SIMS and other management systems don’t include this information in pupil records, so it has to be managed manually in Insight.
If you call your Intervention/group “Service children”, “Service child” or Service", Insight will automatically include this children in your Pupil Premium group as well (see here for more).
Hope this helps!