Hi
I'm very impressed by the grid manager of Designer, and I'm having extra high hopes for Publisher's grid manager.
Adobe InDesign has a disappointing grid system out of the box, but there is a top notch commercial plugin for making grids for professional magazine and book design made by a Swedish art director. You can view some videos about it here: https://designersbookshop.com/grid-calculator-pro-edition.html
It would be great if Publisher had a comparable grid manager. Please let me know what you think!
Bauke