List of the various projects: how to?

Hi,

I do not understand how to list the various projects in the left windows of PlatformIO: I mean that I have various projects, all are in C:\users\myname\documents\platformio\projects ,

but I only see one at a time, for example:

I suppose that this has to do with the workspace of PlatformIO, but I just begin to use Platformio and I know quite nothing about it…

Thank you very much

Your question is not about PlatformIO but about VS Code Workspaces.
Maybe this tutorial will help you:

But I highly recommend to just have one project at a time open in VS Code.

If you install the VS Code Shell extension you can right-click on a folder to open this folder as project in VS Code

Thank you very much !

I have also found this topic, with very simple and clear explanation:

this may help some others…