Routing all traffics from wlan0 to wg0

[CypressLo]

Hi,
I just installed Raspap in my Pi 3B+ and it works fine for me.
I also installed wireguard in Pi to be a client and connected the wireguard server which set up at my home with mikrotik router.
I can also see wg0 interface generated.
From Pi's terminal, I can ping mikrotik router with -I parameter.
For example,
ping 192.168.100.1 -------> not work
ping 192.168.100.1 -I wg0 -------> works

So at least I know the traffics are available.

What I want to do is to route all traffics from wlan0 to wg0.
It means if some phone or laptops connects to RaspAP, they can be part of my home LAN.
They can ping my laptops at home, event access NAS at home.

Does anyone can give me some hints?
Do I need to change some configs or change iptables settings?

BTW, I found a insider only feature called Wireless LAN routing.
When you connect a USB dongle to Pi to be second WAN interface, it can route all traffics from wireless to the USB dongle interface.
It is similar with my purpose.

Thx a lot, Cypress.