Refreshing a report, with dataset

If it is a PowerBI Report, you likely need to schedule a refresh on the report for it to update the cached data from the defined data sources.  If you want users to see changes in-near real time, you could potentially schedule a refresh to occur quite frequently.  This could possibly cause performance impacts to your report server and Dynamics CRM source depending on the complexity and amount of data the report is pulling.  You could also change the data source within the report to live query the data instead of cache it (if this is possible with a Dynamics CRM source).