You can import exchange rates from the European central bank. You can manually trigger an import of exchange rates and configure it as a daily scheduled job.
The manual import of exchange rates is done under Settings > Integrations > European central bank
To configure a scheduled job, browse to Settings > General > Scheduled jobs
The import of Exchange rates will fetch exchange rates for all the currency codes you have enabled in Younium. When you manually fetch rates you have two options, either make a normal import of rates, this will fetch the latest exchange rates only, or fetch historical rates - then you can import exchange rates from specified start and end dates. Please note that the import of exchange rates will never overwrite and exchange rates you have in Younium.