How each screen in your admin behaves: which columns a grid shows, which fields a form asks for, which surface a module uses.
Settings are stored per module and per entity. A grid's columns, filters and defaults, a form's variant and its add-form defaults, a module's behaviour flags: all rows you or the assistant can change, none of them code.
This is what the assistant edits when you ask it to change how a screen works.
In the admin
Generate your starting point in the console, or have us build it for you; the module is already there.