Network shared container field - pdf - file not found

[missjean]

I am very much a beginner.  Hosting a filemaker 12 database.  I would like clients to be able to double click a pdf within a container field to view the document on their machine.  I have no problem viewing the document on my own computer but the clients computer will get a "file not found" error message.  I feel like I have tried every combination of storing externally, inserting file, drag and drop, clicking on and off interactive content in the inspector etc....and it still doesn't work.  Please someone give me a step by step.  It would be greatly appreciated.