3 Interfaces 1 Subnet and IP range

[bonedrums]

Hello, first time poster here... be easy on me.

Updated and removed bad info from original post*

Is there a simple way to have each interface use the same subnet? I want to have my four interfaces connect as follows using the same subnet on the 3 LAN ports:

Interface 1: WAN
Interface 2: 24 port TP-LINK Gigabit unmanaged switch
Interface 3: Ruckus R700 AP for wifi
Interface 4: direct connection to my Unraid server

I've been Googling for months and I'm completely stuck! I really appreciate any help!

Greatly appreciate the community here and any help you can provide!