I'm not sure I know exactly what you are describing, but if you attach an ethernet cable between your Amiga and that access point, you have a normal cabled interface as seen from the Amiga. If on the other hand your Amiga is supposed to receive the WiFi signal coming out of the access point, you have to have a WiFi card (adapter or whatever) in or next to your Amiga, and on the "inside" of that card, it will look the same to the system.
In both cases, when set up correctly, they will just be interfaces (NICs) and seen as such by the TCP/IP stack.
Best regards,
Niels