Access token page not found in My Settings & Tools

Hi,

I am trying to use the REST API, however to do that I need an access token. 

I can see the instructions on this page (https://www.jetbrains.com/help/teamcity/managing-your-user-account.html#Managing-Access-Tokens) that I should be able to go to My Settings & Tools and see a page called Access Tokens, however I am can't see that page.

I can see the following pages: General, VCS Usernames, Groups, Roles, Notification Rules

I am using version 2018.2 - are the instructions different for that version?

Thanks