As a screenshot it wouldn’t look much different from any old dual screen setup I guess. You gotta check out the studio photo and screenshot of m0d having renoise spread across 3 screens IIRC. 
Edit: Did a quick search:
https://forum.renoise.com/t/show-me-your-home-studios/21989
https://forum.renoise.com/t/thanks-for-channel-grouping/38507
Edit 2: WTF? Both pics gone now. Oh well.