It can be found under Extensions > Telerik > Telerik UI for ASP.NET Core > Configure Project. The Telerik UI for ASP.NET Core Visual Studio Extension includes a Configure Project Wizard which helps you customize the look and feel of existing Telerik UI for ASP.NET Core applications and project settings.
Please review our documentation page for more information. You will also have the option to easily apply one of the Telerik built-in themes and adjust some project settings. You can choose the desired release version of UI for ASP.NET Core, as well as create a backup of your project before the conversion. The Visual Studio Wizard is accessed from the Extensions menu > Telerik > Telerik UI for ASP.NET Core > Convert to Telerik Application. The Telerik UI for ASP.NET Core Visual Studio Extensions include a Convert Project Wizard, which performs all need configurations, adds references and enables Telerik UI components in your existing application with just a few clicks.
The Visual Studio Extensions for Progress® Telerik® UI for ASP.NET Core aim to significantly boost your productivity when creating ASP.NET Core projects in Visual Studio.