I'm using O365 workflow and forms. I have a task in the workflow and using Nintex forms (classic) for the task I would like to add an attachment control. The users already have a comment field but there is a need to have supporting documentation added. I find that there is an attachment control on the task list standard SharePoint list but not on the Nintex task form.
I then plan to run a workflow on the task list which will move the document into a repository with the original list's ID embedded in the name for lookup later.