# User Interface
When you open  [HMI Designer](/hmi-designer/introduction.md) in Robpod Studio, the default user interface looks as follows:
The **HMI Panel Editor** is the graphical editor that let you arrange, move and resize **HMI components** with drag and drop actions.
New HMI components can be [added ](/hmi-designer/design-steps/add-hmi-components.md)to the editor using the **Palette Toolbar**.
Available components are:
*  Button
*  Text
*  Monitor
*  Input
*  Pose Input
*  Image
*  DropDown
*  Slider
*  CheckBox
*  Tab
*  Chart
When you select an existing HMI component you will be able to [edit ](/hmi-designer/design-steps/edit-hmi-components.md)it using the **Component Properties** side window.
Component Properties are divided in two section **UI Properties** and **Program Properties**.
**UI Properties** let you configure the appearance of HMI components. You can setup here graphical properties such as colors, fonts, styles, icons, alignement...
**Program Properties** are used instead to link the HMI component to robot program variables or functions. For example you can specify in this section the robot function that must be executed each time a user click on a button.
The **HMI Preview toolbar** can be used to display a [preview ](/hmi-designer/design-steps/preview-hmi-panel.md)of the designed HMI panel both on Desktop environment and on robot teach pendant.
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