To change the width, thickness, or height of a window in your design, you can follow these steps:
- Click on the window that you want to modify to select it. 
- In the left panel of your design interface, you will see the "Dimensions" option. 
- In the Dimensions section, you will find fields labeled "W" (width), "T" (thickness), and "Height" section. 
- To change the width of the window, enter your desired value in the "W" field. 
- To modify the thickness of the window, input the desired value in the "T" field. 
- If you want to adjust the height of the window, enter your preferred height value in the height section. 
- After entering each value, press the "Enter" key to apply the changes. 
This allows you to customize the dimensions of the window according to your design requirements.