Noob VPN question

Sorry if this is a dum question, I’ve only just started with VMs and linix this weekend, steep learning curve. I started with Whonix and its running fine, exactly as per the instructions.

If you want to set up a VPN to hide whonix and tor further, do you do so on the host computer or withiin whonix?

I’m on a macbookair, mostly over wifi. Currenlty doest not have a VPN set up but it does have tunnelblick installed yesterday.

Thanks in advance.