Navigate to https://map.proxi.co/r/SLCAddYourBusiness

Click the green "Add Point Button" in the lower left hand of the screen.

Select the Category that aligns to your place of business.

Type your business name in the "Search for a Place" text box. Select your place of business from the drop down.

Fill in the name of your business. Then, input details for your business. You might choose to add business hours, a link to the menu, etc.