Past the folder "googlechart" in your plugins directory.
Go to http(s)://yourinstanceofredcap/plugins/googlechart/index.php?pid=YourProjectID for creating the sqliteDB. Refresh the page to have the link to the sqliteDB.
in URL you can add parameter:
map= : to focus on a continent (Europe, US) or a country
Exemple :
http(s)://yourinstanceofredcap/plugins/googlechart/index.php?pid=YourProjectID&map=150
http(s)://yourinstanceofredcap/plugins/googlechart/index.php?pid=YourProjectID&map=FR
150 is code for Europe, FR for France
you can find you code here : https://developers.google.com/chart/interactive/docs/gallery/geochart#continent-hierarchy-and-codes
Provinces=YES for activate provinces mode
http(s)://yourinstanceofredcap/plugins/googlechart/index.php?pid=YourProjectID&map=FR&provinces=YES