To set up the SMS settings, adhere to the following steps:

1. Visit the website of the fast2sms API provider at https://www.fast2sms.com/.

2. Create an account or log in if you already possess one.

3. Once you've logged in, access the “OTP SMS” section from the side menu.

4. Next, select “API Key” and copy your API Authorization Key.

5. You must provide your login password for https://www.fast2sms.com/.