Login to your AWS Console and go to IAM. You can choose a different username. I'm creating a user called tf-user.
1. IAM --> Users --> Add user
2. Add username --> Tick the "Access key - Programmatic Access" --> Next: permissions
3. Select "Attach existing policies directly" --> Tick "Administrator Access" --> Next: Tags
4. Key: "Name", Value: "tf-user" --> Next: Review
5. Create User
Once user is created, you should now see the user name, access ky ID, and Secret access key. Click the Download .csv
Next step is to create the credentials file. You can do this after installing the extensions.