Sigma installation instructions?

I have searched the forums but I can't find any installation instructions for Sigma.

I would be grateful if someone could provide a link.

Thanks

https://tsw.median-xl.com/join

Its for TSW, but it also works for Single Player

Subzy wrote:https://tsw.median-xl.com/join

Its for TSW, but it also works for Single Player

Thank you, I got it to work and your post helped. How do I give you an upvote? The link seems to be missing.