Pela definição, o modo a ser usado é infrastructure mode
https://www.lifewire.com/infrastructure-mode-in-wireless-networking-816539
Question: What is Infrastructure Mode in Wireless Networking?
Answer: Infrastructure mode wireless networking bridges (joins) a wireless network to a wired Ethernet network while supporting central connection points for local wireless clients.
E a parte específica do link que o empbilly postou
Wireless client with AES encryption
Config on the wireless page:
Set Mode: Infrastructure
Set SSID: SSID of AP
Enable WPA: Checked
Set The PSK: Shared key from AP in ascii
Set WPA mode: WPA
Set wpa Key Management Mode: Pre Shared Key
Set Authentication: Open System Authentication
Set WPA Pairwise: AES
Channel: Use Auto or configure this to match the channel of the AP to which this client will connect.
Mode: Infrastructure (BSS)
SSID: The SSID of the AP to which this client will connect.
The following settings must match those found on the AP, but examples are provided:
Enable WPA: Checked
WPA Pre-Shared Key: The "password" set on the AP
WPA mode: WPA2
WPA Key Management Mode: Pre Shared Key
Authentication: Open System Authentication
WPA Pairwise: AES (Recommended)
That should be it, Good luck and have fun.