If you can provide the exact source of the "RBS set n3 cbbe 3ba bodyslide public version" (e.g., a link, forum, or image), I can give you more precise installation steps. Otherwise, follow the generic 3BA preset guide above.
Subject: Technical Report: "RBS Set N3 CBBE 3BA Bodyslide Public Version" rbs set n3 cbbe 3ba bodyslide public version
Make sure you have these from Nexus Mods: If you can provide the exact source of
All should be for Skyrim SE/AE.
Overwrite Conflicts – If prompted, let the RBS meshes overwrite any previous outfit mods. All should be for Skyrim SE/AE
In-Game Testing – Use AddItemMenu or console (help "RBS N3") to spawn the gear. Equip and toggle TCL to see physics in action.