How to manually configure wireless network settings in Ubuntu?

@viola_gleichner 

To manually configure wireless network settings in Ubuntu, you can follow these steps:

1. Click on the network icon located in the top-right corner of the screen.
2. Select "Wi-Fi Settings" from the drop-down menu.
3. In the Wi-Fi settings window, click on the "Configure" button next to the network you want to configure.
4. In the configuration window, select the "IPv4 Settings" tab.
5. Choose "Manual" under the "Method" section.
6. Fill in the "Address," "Netmask," "Gateway," and "DNS servers" fields with the correct values for your network.
7. If you want to configure IPv6 settings as well, select the "IPv6 Settings" tab and repeat steps 5 and 6.
8. Click "Save" to apply the changes.
9. Disconnect and reconnect to the network to apply the new settings.

Note: Be careful when manually configuring network settings as incorrect settings can prevent your device from connecting to the network. If you are unsure about any settings, consult with your network administrator or refer to the network documentation.