If you want to be able to use the program anywhere without installation, for example on an USB drive, you can make it a portable application.
By default, settings and executable files are located in two different locations. Settings are in:
C:/Users/%USERNAME%/AppData/Local/Bionus/Grabber
Or, if you are using an old version of the program:
"C:/Users/%USERNAME%/Grabber"
And the executable files are in:
"C:/Program Files/Grabber"
To make the application portable, you just have to copy the contents of both of these folders in another directory.