VISUAL CODE

I got some stupid questions about visual code

1.- When I export a project, I have to quit visual code (on Mac) is this a error or is there a way to prompt for other project.

2..-How can I see new devices and possible permission on manifest and possible sdk versions like we do on eclipse?

3.-Is there a way to export multiple projects?

4.-How can I refresh as we do on eclipse to see posible errors?

5--How do I set my main workspace? sometimes i start visual code and folders are gone

thanks a lot in advance