You have to select the folder for the different games you want parse logs for, this is normaly done automaticly but if that fails you can do it manualy like this.

You can check the game folders in window that shows, if you have to select the folder manualy remember to click the Do not automaticly find game folder and then select Save

 

 

The game folder is where you have installed you game, normaly the location of the exe file of the game