For the right click on Start button, you can customize the list of the displayed features.
Open the folder C:\wsession\WinXshell
Edit with Notepad the file named WinXshell.lua
You will see the display menu list:
{"#{@twinui.dll,10911}", winx .. [[Group3\10 - Programs and Features.lnk]]}, --Programs and Features
{"#{@twinui.dll,10913}", winx .. [[Group3\08 - Power Options.lnk]]}, --Power Options
{"#{@twinui.dll,10914}", winx .. [[Group3\07 - Event Viewer.lnk]]}, --Event Viewer
{"#{@twinui.dll,10915}", winx .. [[Group3\06 - System.lnk]]}, --System
{"#{@twinui.dll,10916}", winx .. [[Group3\05 - Device Manager.lnk]]}, --Device Manager
{"#{@twinui.dll,10912}", winx .. [[Group3\04-1 - Network Connections.lnk]]}, --Network Connections
{"#{@twinui.dll,10917}", winx .. [[Group3\04 - Disk Management.lnk]]}, --Disk Management
{"#{@twinui.dll,10918}", winx .. [[Group3\03 - Computer Management.lnk]]}, --Computer Management
{"#{@twinui.dll,10919}", winx .. [[Group3\02 - Command Prompt.lnk]]}, --Command Prompt
{"---"},
{"#{@twinui.dll,10921}", winx .. [[Group2\5 - Task Manager.lnk]]}, --Task Manager
{"#{@twinui.dll,10922}", "control.exe"}, -- [[Group2\4 - Control Panel.lnk]] --Control Panel
{"#{@twinui.dll,10923}", winx .. [[Group2\3 - Windows Explorer.lnk]]}, --File Explorer
{"#{@twinui.dll,10925}", winx .. [[Group2\1 - Run.lnk]]}, --Run
Remove the lines you do not want to be displayed and save the document.
For the "Open-Shell" menu which is displayed when the user click on the Start button, the story is a different one.
The features are written into HKCR registries at each logon. This cannot be changed.