The new BBGV website allows you to manage your company detail as well as managing your own profile.
After logging you can access your profile directly by clicking the button called "My Company" located right above the BBGV logo as show on the screen shot.

Once on your company page, simply click on the "Edit Company" button in the "Company Options" box (see screen shot below).

You simply need to complete your changes and click on the "Save" button located at the bottom of the page, right after the form, to update your company detail.