A per-person switch on each shared space. When on, that space's net worth is added to your Personal net worth. Nobody else sees it or is affected.
Default · on if you're an Owner (it's usually your money), off if you're a Member (usually someone else's).
Held for others · Kitchen's money sits inside your BCA, so it's already in your total. It gets no switch; adding it would count it twice.
Unchanged · the space itself, its budgets, Stats and other members' views.
Two places · tap "Personal + …" on the net worth card, or open the space's settings. Both phones share one setting.