Provided they belong to the same legal entity, you can use your Fetchify account for multiple sites.
Once you have your account, log in and select Access Tokens and Statistics from the menu on the left.
Use the blue Create Token button to create individual access tokens for each site. The individual tokens allow you to keep track of the usage on each site as well as make maintenance and future changes easier to process.
If the sites do not belong to the same legal entity, we can help you get set up with a plan that works best for you, just get in touch and ask a member of the team