https://community.tp-link.com/en/business/forum/topic/501908

The above thread (and others I've found) show how to set up policy routing.  I have > a dozen policy routes, so no mystery there.  I would appreciate some help, however, in setting up the LAN/VLAN to select.  All of these instructions say "set up a VLAN for the SSID" - done - simple.  Then what?  Clearly I need to define a LAN as well?  (I tried creating a VLAN rather than an interface... it doesn't show up in policy routing to select.  So.. it must be a LAN I need to set up... but I don't want a new subnet or a separate DHCP server so...  would someone be willing to post a screenshot of THAT step?  I don't think it's quite "set a VLAN on SSID and set a policy route for the VLAN" and I'm uncertain what happens in the middle.

Thanks much!