Go to the Google Maps Platform and click Get Started.
Check Maps and Routes. Name your project.
Setup the billing information. You’ll get a 300$ credit and you won’t be billed until you’ve used that up and explicitly authorised Google to charge you.
In ‘Enabled APIs’, select the first one. Select ‘Credentials’ and copy they key with the copy-to-clipboard icon.
Start Excel. In the Geodesix tab select Options. In the text box paste the key that you copied:
Restart Excel for the key to take effect.