Split & Reoganise Surfaces

Hi Everyone - I had a go at this but ended up going down the rabbit hole so to speak.

I’m looking to lay a grid over a series of surfaces and use the grid to split the surfaces. That part I can do. Then I want to be able to reorganise the grid and the internal split surfaces so that I can add labels and fabrication details. It’s proving quite difficult to group the split surfaces with the grid and maintaining a parametric control over the grid size and density. Any help would be much appreciated.