How to indent/format a selection of code in VSCode with ctrl+shift+f

I want to indent a specific section of code in VSCode

I read How do you format code in Visual Studio Code (VSCode) post that gives shortcuts to indent the whole code but it doesn't work when selecting a specific section of code.

I tried ctrl+shift+F after selecting some line in my code but the whole file is indented. I'm on Windows with VSCode Insider 1.8.0. Any help is appreciated.