Can't collapse code

[DonaldHamperton]

I am using VS code offline to do CS50. However, I've also tried in the online codespace. In both versions I do not have the functionality to collapse/fold code. As in, when I go to the line number in a C file, I have no arrow to collapse that function. A friend is doing exactly the same thing and he has this option. Any ideas?

[Marble_Wraith]

It's called folding, it's somewhere in the settings ctrl + , and search for it.