Log in to your Google My Business account. Select the place you want to administer and open it. Click Info from the menu. Click 'Edit' in the "Services" section.
Log in to your Business Profile Manager account.
Click Info from the menu.
Click Edit in the 'Services' section.
Add your services to the list.
Save the file.
So, here's how you do it. To access your GMB dashboard, go to google.com/business. On the left, click the info link. A "additional hours" section with a blue icon of a clock with a plus sign will appear directly beneath your usual hours.
You may define up to 20 service regions, which is great news. While your consumers may be further away, Google recommends that your designated sites be no more than two hours away from your main location.
If you're on the main Info screen, scroll down past the links area until you see the Services section. To modify, click the pencil icon. This will take you to the Services section. Alternatively, you can go straight there by selecting Services from the left-hand sidebar menu.