All files are managed within Customer Jobs. You must first create a Job in order to be able to Upload and Process Files.
You can choose to Upload and Process files in one action, or Upload Only then use Submit to... to process files after they've been upload. A common scenario is that Customers upload files only and rely on Tenant (Printing Company) operators to process files for print production after upload.
To process and output files you use Workflow Pipelines and Cloud Connectors, which must be preconfigured by an Administrator. See Configuring Access Workflows.
When Processing files, you can configure Workflow Pipelines to only do Preflight or PDF Processing or Trapping. But Workflow Pipelines can also be configured to do Preflight, PDF Processing, Trapping, and Output to a Cloud Connector (Hot Folder), all in a single operation.
Once a file has been uploaded, it can be viewed in Smart Review. Preflight Reports are viewed in Smart Review.