I want to add custom folders to Windows 10 Pro x64 Control Panel, This PC and Navigation Pane. I found several tutorials (tenforums and winaero) that offer pre-made registry scripts to add applets and folders to control panel and file explorer. However, I would like to know more about what some of the strings and keys in HKCR\Classes\CSLID mean, what they do, and how to properly choose the right values. I am not a coder/programmer and the MS documentation is a bit unintuitive and unclear. I have gotten some answers in the past but would like some more ELI5 replies if possible.

For example, say I want to add back the old Notification Area Icons applet back to control panel. The GUID is {05d7b0f4-2121-4eff-bf6b-ed3f69b894d9}. Some questions about the registry entry:

System.Software.TasksFileUrl="Internal"
InProcServer32=%SystemRoot%\System32\shdocvw.dll and ThreadingModel=Apartment
Instance
InitPropertyBag, ResourceDLL=taskbarcpl.dll and ResourceID=dword:00000064
ShellFolder, Attributes=dword:a0000000 and WantsParseDisplayName=""
What do the keys, strings and values mean, what do they do and how do you know what values to assign?

Thanks!