If you want to use Kodi in a window instead of full screen, here are the steps to follow:
1. Open Kodi on your device.
2. Go to the home screen.
3. Click on the "Settings" gear icon on the top left corner of the screen.
4. Select "Interface Settings".
5. Scroll down and select "Window".
6. Under the "Windowed mode" section, you can adjust the settings for window size and position.
7. To set the window size, select "Custom" and enter the desired size in pixels for the width and height of the window.
8. To set the window position, select "Custom" and enter the desired coordinates in pixels for the X and Y positions of the window.
9. Click "OK" to save the changes.
10. Exit the settings and return to the Kodi home screen.
11. You should now see Kodi in a window instead of full screen.
Note that the steps may vary slightly depending on the version of Kodi you're using, but the general process should be the same.