3. Manually Connect to a Wi-Fi Network
From a Home screen, tap Apps > Settings.
Tap Wi-Fi > Add Wi-Fi network.
Enter information about the Wi-Fi network:
Tap Network SSID to enter the name of the Wi-Fi network.
Tap the Security field and select a security option. This must match the current security setting on your target WAP. If secured, you will also need to enter your WAP’s password.
Tap Show advanced options, if you need to add advanced options such as Proxy and IP settings.
Tap Connect to store the new information and connect to your target WAP.
Reference techlife.samsung.com