I will try to explain:
Clicking inside app will not set focus on that app window.
The goal was not to loose focus of what you are doing!
For example, you are playing a browser game on chrome and you have to click on a specific coordinate of chrome browser to pick an object in the game every 10 seconds.
If at the same time you are working on a Excel file, you do not want to loose focus of Excel!
With "inside app.." you configure it to click on the handle of Chrome main window at specific inside coordinate X and Y every 10 seconds, and Clicador will send a clicking message without loosing focus of your Excel file.
If you use "move mouse and click" you will loose focus on the Excel file.
When using modes that say "at screen coordinate" or "where mouse" is you must capture Live information Screen position X and Y.
When using inside app you must use Live information handle position X and Y.