How do custom fields appear as columns in the relevant lists?

Custom fields you've added become available as columns in the relevant list views, so they can be turned on through the same per-user column-visibility control as built-in columns. That means a custom "Trade license number" on vendors, or a "Gift message" on orders, isn't trapped on the detail form — it can be surfaced in the list for scanning, sorting, and at-a-glance review by any user…

Custom fields you've added become available as columns in the relevant list views, so they can be turned on through the same per-user column-visibility control as built-in columns. That means a custom "Trade license number" on vendors, or a "Gift message" on orders, isn't trapped on the detail form — it can be surfaced in the list for scanning, sorting, and at-a-glance review by any user who chooses to show it. Custom data is thus fully integrated into the list experience.