Plex forum?--subtitle question

Registration date
Saturday November 24, 2012
Last seen
November 24, 2012
I just signed up for what I thought would be the Plex Forum - I see quite a list of Forums, not sure where to post. So, that's my first question.

My actual question - I looked up info online about playing movies with subtitles using Plex and Roku to stream to my TV. The page I found referred to making changes in the Preferences tab of Plex - but search as I may, I don't see any Preference tab, or pop-ups like I see in this online info. Maybe it was for a different version of Plex?

I'm hoping there's a way to stream video from my hard drive that has the subtitles in a separate SRT file, like you can do when using VLC.