I've made two tutorials on controlling basic parameters of the SourceAudio Nemesis delay with the Helix.
Controling Common Nemesis Delay Parameters With The Line 6 Helix
https://www.youtube.com/watch?v=FX77-1Tbtbk
Changing to specific Nemesis Delay preset numbers with the Line 6 Helix.
https://www.youtube.com/watch?v=4qlCk6lXMF8
Enjoy.