Right-click on your project and head down to Properties and then on the left-click on the settings button.
Enter the Name, type, scope & value of each setting you want to add.
Note: The Application Scope is not editable during runtime and will always stay the default value you set right now.
Setting Values To Settings Value
If you want to set, for example, the value of a variable to the same as a settings value, you can do the following:
string Name = Properties.Settings.Default.SettingName
Changing Settings Value
You can change settings values in runtime (If you set the scope to user). This can be achieved easily, by doing something simmilar to this:
Properties.Settings.Default.SettingName = "Some Value"; Properties.Settings.Default.Save(); // Save all edited settings
If you don’t include the last line in the example above, then the values edited won’t be saved!