1. Click on the Finder icon in your app dock.
2. Select Applications from the Favorites list.
3. Scroll down and double-click on Utilities.
4. Double-click on Activity Monitor.
5. Type the name of the app you are looking for into the Search bar.
6. Select the app.
7. Click on the X in the upper left corner of the window.
8. Click Quit to confirm that you want to quit the process.