Processor Workspace Add functionality to the attachment feature within a process to be like Legacy

[budrigby]

The add attachment pop up window disappears after one attachment is added in Processor Workspace. This only happens when the add attachment is used within a process.  We have had users ask for it to function like Legacy Processor where the window stays there until you are done attaching one or multiple items to the object.  

[Karen_Hunter]

Please provide additional information.  The current Create and Link attachment menu allows memore than one items to be attached before choosing to create them.