To view or update your Account Settings navigate to Settings > Account Settings.

Here you can update your, Type of company your Timezone and the Primary Currency for your account your Financial Year detail, Date Formats and add your Website address. 

When you've finished making your changes just click Save. 

If you are looking to update your company's Account Contact Details, Then under the Account Contact Details you can press Edit in BrightHub.

When you have been taken to BrightHub you will be able to press Profile on the left to edit your contact/company details.