This is the main window of Quick File Rename where you can browse through your folders and select a list of files that you want to rename 

In the Scheduler window you may enter Task settings that will proceed to rename your files after a specific schedule. You can set here the start date and time tu run the task, the Frequency and the Recurring task properties 

The Audio Tagger allows you to extract tags from file names and also to add tags from fields where you can enter the Artist, Title, Album, Genre, Year and Track number 

The Settings window allows you to set the Display options, the Tagging and Rename Logs settings