Step 1:
Find API Settings in Profile settings.
Once in the profile settings, search for an option called "API Settings". This is where you'll manage your API or sandbox credentials.
Step 2:
Add IP Whitelisting.
Within the API Settings section, navigate to the third section, where you'll discover the "IP Whitelisting" option. Here, you can add new IP addresses, view previously added IPs, and remove any IP addresses that have been granted access