Go to your Account section, located in the upper right corner of the page. Click on the linked business account you want to edit, then go to the Profile tab.
You will have two views available: Admin view to make changes to the business profile, and Public View to preview how other users will see your company. Make sure you are in the Admin view. You can switch views using the button located in the upper right corner of the business profile, the current view is also indicated next to the company name.
Each editable section is marked with a pencil icon. Click on the pencil icon in the section you want to edit, make the necessary changes, and remember to Save.
NOTE: to edit a business profile on Dunsguide, you need to be logged into your account. Additionally, your account must be linked to a business.