The stringer check already computed the reaction at the top of each stringer. Add connectorCapacity (lb per hanger or bolt group, from the maker's table; none is shipped) and the report divides it out: connectors per stringer, and the buy count for the flight.
Hand sums, as in the tests: 50 psf over a 16 in stringer spacing and a 100 in run gives 5.56 lb per inch and a 278 lb end reaction. A 300 lb connector needs one per stringer; a 100 lb one needs three.
The limit: the connector's own table, its fasteners and the ledger or header it bolts to govern. This is arithmetic on typed numbers for a framer's first pass, checked by hand only, with no page field yet.