The Maintenance tab is used to clean up your newly acquired videos and add-on files or to clean up your collection in general. Use it in conjunction with the Windows Explorer or FileBot, but basically, you can use it with any program, which accepts file drops.
Click on any of the Select buttons to select the corresponding items. To rename the selected items just drop them on FileBot. To move them, drop them into the destination folder in the Windows Explorer. To delete them just drop them in the Recycle bin.
Click on the User Manual picture to open the online User Manual or on the MFM icon to go to the Movie File Merger web page.