If you click the left/right button of your mouse, the red/blue circles will be added to the recorded video.
Add mouse highlight effect
If you check the 'Add mouse highlight effect' option, a yellow circle will be added around the mouse cursor.
If you apply all of the options above, the mouse cursor will be recorded as follows.
Play mouse click sounds while recording
You can add mouse click sounds when clicking the left/right mouse.
If you want to change mouse click sounds, replace the "lclick.wav" and "rclick.wav" files in the data folder of Bandicam (C:\Program Files (x86)\Bandicam\data) with another .wav file.
(Caution: You have to backup your WAV file when you update/reinstall Bandicam because the WAV file will be overwritten while installing.)