How to set a guest wifi and make it a mesh network in b1300

Actually I can set guest wifi in the luci, and bridge it to a “dmz” zone which leaves my lan zone untouchable.

I wonder is there a way to make the guest wifi to a mesh network between my two b1300 devices.

BTW, I’m using the stock firmware from gl-inet and the mesh function works perfect for me.

Thank you.

Sorry, I am not clear what does it mean. Could you please explain more details?