Filters & Groups: Disadvantaged
You can use Insight's filtering and grouping options to report on your Disadvantaged children.
Insight includes Ever 6 FSM, In Care and Adopted children in this category, following the DfE's definition that you'll see used in Analyse School Performance (ASP).
Except for the Adopted flag, which will have to be managed manually, the right information should pull through automatically from SIMS when you update your pupils via a CTF. If you need to manage flags manually you'll need to update pupils' interventions and groups.