Prerequisites
Key features of Auto Update Exchange Rate.
Currency Exchange Country List
How to install the Auto Update Exchange Rate extension.
Create OAuth authorization
Support.

You must be the Zoho CRM's super admin.
You need Zoho CRM Enterprise edition or higher.

The exchange rates will vary depending on the base currency.
The exchange rates will vary Twice a day.
Search for the "Auto Update Exchange Rate" keyword and click the install button.
If you got an error while checking the exchange rates you will get an email.
Go to the extension setting and create the OAuth again.
Click Authorize and select any of the options shown in the image below. Only the authorization will take place if you have developer access.
Go to CRM set up > General > Company Details > Currencies to view the currency exchange.
