Section 5.3 makes a point that it is important to split the multilevel data by the highest level experimental unit (e.g., participant rather than observations of participants). However, it doesn't provide a clear way to do this in the tidymodels ecosystem. I recommend adding either a quick example chunk below that show how to do this or a link to a vignette or wiki page or something that shows it.
Section 5.3 makes a point that it is important to split the multilevel data by the highest level experimental unit (e.g., participant rather than observations of participants). However, it doesn't provide a clear way to do this in the tidymodels ecosystem. I recommend adding either a quick example chunk below that show how to do this or a link to a vignette or wiki page or something that shows it.