Work in a shape-like structure and include levels throughout it, please

You can use your imagination for a project to introduce self-checkout registers in the college campus store after preparing a work breakdown structure (WBS). It is important to provide WBS's top two levels. ONE of the items on the second and third levels should be decomposed. Use a format like structure Embedding or attaching the WBS is recommended . 100% of the scope of a parent item should be defined by its children items