That's not possible with Google Nest Wifi.
If that's a dealbreaker you'll probably be better off getting a different, more advanced network solution: I don't think Google will add such functionality to a simple home mesh networking system. If you want to request this to be added to Nest Wifi the way to do it currently is sending it as feedback in the Google Home app.
@MichaelP and olavrb, thanks for the help as always!
@Tijl, thanks for reaching out. I hope that the response of olavrb and MichaelP has answered your questions. Our team is working hard to deliver the best experience for our users — we'll take this as feedback. Keep your eye on the Google Nest Community page https://goo.gle/2JvnMRy for any updates. Please let me know if you have other questions or concerns as I will be locking this in 24 hours if I won't hear back from you again. Feel free to start a new thread and we'll be happy to help.
Check out this link on how to file feedback.