Upload documents as outlined here.
After filling in the recipients click on Done & Apply Workflow.
The workflow window will open.
Fill in the details and add your workflow steps.
Should you upload documents to a folder with an Automatic Workflow associated to it, you can click on:
Skip & Apply Workflow, if you are not adding any recipients to the distribution. This will put the documents into the Workflow.
Skip Distribution (for more information refer here).
Select the files to be added to a Workflow
Click on Apply Workflow
Choose Workflow
Fill in any additional details as required
Apply