How to create VLAN on R8000P for LAN and WiFi devices?

I don't have IPTV. I just want as much isolation between devices connected to R8000P as possible. I already have software do most of that and I have all WiFi devices use the Guest Access. I want further isolation by creating VLAN's for WiFi and LAN devices. I can't figure out how to do that. Every time I enable VLAN, I can't connect to the internet from any device.., even though the router gets the WAN IP like it does without VLAN enabled.

Devices don't have to be tagged, but they need to be isolated via VLAN. I have the latest firmware.