Selecting ONLY ONE OPTION in a Group

From my understanding, in a group there needs to be atleast one or more than one option specified. In my use case, for the class given below, I want to select **only ONE option (not more)**. Is there any way to do this?

```csharp
internal class TimeFrameOptions
{
[Option(shortName: 's', longName: "seconds", Group = "timeframe", HelpText = "")]
public int Seconds { get; set; }

[Option(shortName: 'm', longName: "minutes", Group = "timeframe", HelpText = "")]
public int Minutes { get; set; }

[Option(shortName: 'h', longName: "hours", Group = "timeframe", HelpText = "")]
public int Hours { get; set; }

[Option(shortName: 'd', longName: "days", Group = "timeframe", HelpText = "")]
public int Days { get; set; }
}
```
Thanks

Start by tracing how the Group setting is handled for the four TimeFrameOptions properties and determine whether it supports exactly one selected option. Done means the requested behavior is clearly defined and the four-option example has a verified success path for one option and a clear result when none or multiple options are selected.

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