Adding IPTV VOD Service to my Shares?

Hi, under the Shares section, is it possible to add servers not on my network?
I use an IPTV service which has a sizeable on demand library. I know their service works well with Plex on the ATV4.
I have a M3U play list address, would it be just as simple as adding that to the “address” and does something need to go in “work group”?