D-Link DAP-1520 User Manual page 28

Section 3 - Configuration
If the wireless network you selected is secure, you will be
prompted to enter the Wi-Fi.Password.
Click Next to continue. Click Back.to return to the previous step
if you need to select a different wireless network.
The DAP-1520 will re-broadcast the Wi-Fi connection from the
uplink router as Extended 2.4GHz and 5GHz Wi-Fi Networks. Enter
the Wi-Fi.Network.Name (SSID) and Password that you wish to
apply to each of the extended Wi-Fi networks.
Click Next to continue.
D-Link DAP-1520 User Manual 24