I do not know of any tutorials for Split Levels. Typically we set up multiple View Maps which are on the same level with different cut planes and then stitch them accordingly in the Layout Views. Cumbersome, but works quite well graphically.
Robert J. Garand
ArchiCAD USA 28-Build 3110 USA FULL
Windows 11 Prof (64 bit) - Intel i9-14900K CPU 3.20 GHz - 64 GB RAM - NVIDIA RTX 5000 Ada Generation