I've come across many similar questions relating to similar projects on Stack Exchange Meta. Despite this, I still can't quite translate to my own project and problem.
I believe this is fundamentally a math question. I struggle desperately with math and logical thinking, so can't work out what calculations are needed or whether this is possible for my document.
I have created a z-fold document. I calculated a layout grid using the following dimensions:
Each individual page is 99mmx210mm I set a margin for each page to 1cm (10mm) I want to divided the space within the margins into 9 rows and 3 columns. I've set a gutter width between each row and column to 2mm (I wanted it to be small, as I have a lot of content to place).
This is what I am left with - all good!
I then now want to set up the baseline grid to fit with this layout grid, as I will be using a fair bit of text in the design.
As my copy will be set to a point size of 10 (10pts) I set the baseline grid increment to 10 pts also, lined up within the margins.
I believe I am struggling with logical maths equations or something. Any insight or formula explanations that would help me both with this project, and for calculating future projects, would be appreciated.
Following guidance:
As you can see, I haven't had desired effect?