Nexxt Vector 2400AC Manual page 18

3. The default Guest Network WiFi Name is Vektor_Guest. You may
change it to anything you like. The default Guest Network WiFi
Password is 12345678. You may change it to anything you like. We
will keep the default for this example.
4. Validity period: this is how long you want the Guest network to be
available. Tap on Validity period, you can set 4, 8 hours, or Always
Valid. Always Valid means it will always be on.