Where can I adjust items in context menu inside DO explorer

I looked into the preference settings, I do not see a section for context menu adjustment and it is very crowded. I am testing with pro version on v12 that I downloaded about few days ago from dopus website.

Which context menus?

The ones when you right-click files can be edited via Settings > File Types.

The ones when you right click the window background can be edited via Settings > Customize Toolbars > Context Menus.