Manage your business information under "Settings", and access it sitewide.
The BusinessInfoExtension is supposed to be added to SiteConfig, but could potentially also be used on other DataObjects, e.g. a "Business Directory".
By default this module changes nothing on your installation.
You'll need to add the following lines to your mysite/_config/config.yml file:
SiteConfig:
extensions:
- BusinessInfoExtension
- Integrate with Display Logic for adding more data, but keep things clean