Tokens (or API keys) is data that can be used on multiple places in your website project. An example would be your address or the price for the book you are selling.
Login to your project and in the visual CSM editor click the right menu sidebar and select API keys & Tokens.
Alternatively you can find the API Keys & Tokens by clicking the settings button on the main menu.
Select the API keys or Token you want to edit. In this example we are going to change the Address token.
Input the new value for your token and click save.
Publish your website (all pages if token is used in content pages).
This is an example of an address token added to the bottom of a page. This address is also used in the contact page of the website.