Perhaps my problem was unclear. I would like to have VSCode start PlatformIO Home on different port, but cannot find out how. Currently it starts on 8010 which my computer does not allow.
I see in
.vscode\extensions\platformio.platformio-ide-1.7.1\node_modules\platformio-node-helpers\dist\index.js.map
this hardcoding
const HTTP_PORT_BEGIN = 8010;
const HTTP_PORT_END = 8100;
so I guess that i will not user PlatformIO on my work computer 