You need a google account to get a key.
1.Open https://console.cloud.google.com/projectcreate Create a project on Google, you maybe asked for billing account.
2.After the project is created, open https://console.cloud.google.com/apis/ Click on Enable APIS and Services link on the main page, find Maps Javascript APIin the list and enable it for the project.
3.Open https://console.cloud.google.com/apis/ again, click credentials from the left menu and click create credentials then select API Key, your Google Maps API key is created, copy the key.
4.If the links are down or moved, search on Google about maps api key to start over. Do not share your API key and do not use it on a public website.
5.Login to your Panel root >> Enter your API key in Panel Configurations and save the settings.
6.Check Radio Listeners (Google Maps) feature, choose a radio from the list that has listeners now.
