If you purchased a GSuite account and would like to change the A record for your domain first log in to the Google admin console at https://admin.google.com/ with your GSuite administrator user.
Click on “Domains”
Click “Add/remove domains”
Click on the twisty (small black rectangle) to expand the “Advanced DNS settings”
You are provided with your registrar information user credentials. Make note of these and click on Sign in to DNS console.
Click on the domain that you want to modify.
Click on the ellipses (…) 3 dots. and click on “Manage DNS”
You should now be presented with the option to change your DNS records for the domain that you purchased.
Once your A record has been set to the IP that you want you can use DNS Checker to verify the status of the record’s propagation. https://dnschecker.org/