Steam Online Subsystem and Greenlight

So I am not sure if this is actually a problem or whether I am just over analysing things, so here goes:

Do I need to be on Steam Greenlight before I can start putting in the Steam Online Subsystem and actually be able to get my test players to use it?

I understand Steam Greenlight and I am an active user of Steam, but I am not sure whether I can develop with the Steam Online Subsystem and let my testers play the game at the same time.

If there is any documentation on this, please can you share it with me … thanks. 8-}

Edit: Ahah … Epic Wiki to the rescue: Steam, Using the Steam SDK During Development

And some more from that same wiki post: Online Subsystem Steam

Are there any special nerd things I have to implement into my UE4 game to put it on steam?

There test app id 480 that anyone is free to use but you game will be called “Spacewar” in Steam :stuck_out_tongue:

You just need to setup Steam OnlineSubsystem engine will do the rest, you got wiki page link how to do it above