How to display an OS alert that prompts permission to use location information

I am creating an app that runs on Mac using objective-c. Since location information permission is required, I implemented the following.

//  AppDelegate.m

#import <CoreLocation/CoreLocation.h>

- (void)getLocation {
	CLLocationManager *locationManager = [[CLLocationManager alloc] init];
	[locationManager requestWhenInUseAuthorization];
}

- (IBAction)buttonClicked:(id)sender{
	[self getLocation];
}

Info.plist

<key>NSLocationUsageDescription</key>
<string>This app requires location information.</string>

What I'm hoping for is that when I run this app and press the button, I'd like to see an OS alert asking for permission to use location information, saying "***" would like to use your current location.

However, when I try it, no alert is displayed. However, the app name has been added to the "Location Services" item in "Security & Privacy" in System Preferences.

How can I display alerts?