Yes. PIN Verification can be enabled on a per package basis by toggling the 'Pin verification button to 'On' under the Package settings. You can choose to enable it for all recipients or just for ad-hoc users. If the toggle is locked to 'On' this means that your FileRunner admin has enforced the use of PIN verification across all packages sent under your account.
We recommend using PIN Verification for an added layer of security but this feature is optional.