Resources (lookup lists)
A resource is a reusable list — customers, sites, part numbers — that a Choice field can pull its options from, instead of you typing options into every form.
Binding a choice field to a resource
Section titled “Binding a choice field to a resource”Select a Choice field, set its options source to resource, then pick the resource and which column supplies the option text (and optionally a separate value column).
Cascading selects
Section titled “Cascading selects”Set Filter by field to make one Choice depend on another: pick a customer in field A and field B only offers that customer’s sites. You choose which resource column the filter matches against.