Web Report Designer
Since R2 2019, we offer a web-based report designer which allows creating and designing reports in the Report Server. Further information about this controll can be found in Telerik Web Report Designer article.
Access
To enable it, run the server and navigate to Configuration -> Designer -> check Enable Web Report Designer -> Save Changes:
Once you enable it, you will see the icon in the reports view:
Data Connectivity
Report Server supports WebService, JSON, SQL and inline CSV data sources.
Browsers Support
The Web Report Designer can run on web browsers that supports JavaScript EcmaScript 6: Google Chrome 77.0 or newer; Mozilla Firefox 69.0 or later, Microsoft Edge 44.17763 or later.