Internet Marketing is not Listed under Settings->Business Management

I am trying to capture a lead from external websites( web-to-lead)  and I have a blog (https://community.dynamics.com/crm/f/117/t/104097) to capture a lead by Activating Internet Marketing under settings -> Business Management ->internet Marketing but

when I go to settings -> Buniness Management, Internet Marketing is not listed as an option or entity.

is there a reason why it wouldn't be there?

Is there a way we can get it?

Thanks,

Ghulam