Press space to do the next slide. 1-4 for tutorials 1 - How to make AYS 2 - Adding Hold Notes 3 - Midsong Events 4 - Multiple Characters 5 - GFSing 6 - Multikey Fullscreen is reccomended for full image quality. Let me know if this helps, or if anything is unclear.
Chart Converter: https://scratch.mit.edu/projects/666734314/ Blocks are located inside of this tutorial, too, specifically the idle and also "Wait until" block.