noun
layout structure
Computing term referring to the arrangement or structure of elements in a layout, such as in user interfaces or document formatting.
このソフトウェアでは、割付け構造を自由に変更できます。
In this software, you can freely change the layout structure.
Compound of 割付け (わりつけ, 'assignment, layout') and 構造 (こうぞう, 'structure').