You can use the drop-down menu in the top-right corder next to your username or click here.
You can find the option to edit at the top of your company profile.
You'll see "Location" in the menu at the top of the page. On desktop, the menu appears on the left side of the screen.
Input your location details, including the appropriate number of employees in the location.
Scroll to the bottom of the page to save your profile.