All the sub pages inside this are in the folder route-groups, but for each page if you want to assign different layout you can do that by making category wise folder names inside round brackets()
Route Groups
- This example uses Route Groups to create layouts for different sections of the app without affecting the URL structure.
 - Try navigating pages and noting the different layouts used for each section.
 - Route groups can be used to:
 - Opt a route segment out of a shared layout.
 - Organize routes without affecting the URL structure.
 - Create multiple root layouts by partitioning the top level of the application.