How to select multiple windows
1. Open Window Clippings and make sure that “Prompt for selection” is selected. Now click the “Create screenshot” button.
2. Click on the first window you’re like to capture.
3. Now press and hold the Ctrl key on your keyboard and click the second window you’d like to include.
4. You can include as many windows as you need using the Ctrl key to add or remove windows from the selection. When you’re ready press the Enter key on your keyboard to capture the selection.