Separate LAN from WLAN using Voxel's firmware

Hello,

I have successfully separates my LAN from WLAN using Kong's DD-WRT version and I am wondering if it is possible to do the same using Voxel's firmware?

What I could accomplish, without using a guest network, was to force all Wi-Fi connections (2.4 and 5.0) to a separate subnet and isolated those connections from my LAN.  I used the following page as reference...

https://www.dd-wrt.com/wiki/index.php/Separate_LAN_and_WLAN

Would it be possible to do something similar using Voxel's firmware?  Thoughts?

Thanks,