# Design Time

To start using **RadCalculator**, just drag it from the toolbox and drop it onto the form.

## Smart Tag

Select **RadCalculator** and click the small arrow on the top right position in order to open the Smart Tag.

![WinForms RadCalculator Smart Tag](https://www.telerik.com/products/winforms/documentation/assets/6813ea87fabc22e39766a77935928fb0/calculator-design-time001.png)

**Common Tasks**

* **New Theme Manager**: Adds a new RadThemeManager component to the form.

* **Edit UI elements**: Opens a dialog that displays the Element Hierarchy Editor. This editor lets you browse all the elements in the control.

* **Theme Name**: Select a theme name from the drop down list of themes available in the application. Selecting a theme allows you to change all aspects of the control's visual style at one time.

**Learning Center**: Navigate to the Telerik help, code library projects or support forum.

**Search**: Search in the forum for a given string.

## See Also

* [Getting Started](https://www.telerik.com/products/winforms/documentation/controls/calculator/getting-started)

* [Structure](https://www.telerik.com/products/winforms/documentation/controls/calculator/structure)