If an item has been scanned in by a PackageX Receive user from their account, then another PackageX Receive user from the same building can check out that item using their own account.
Multiple PackageX Receive user accounts can have access to the same building, and they can all check-out items scanned by other PackageX Receive users of the same building.
You can learn more about checking out items here.
In case of any difficulty, reach out to us at support@packagex.io and we will be glad to assist you.