The "Rename Files" menu option allows renaming files with two primary goals in mind:

  1. insert a timestamp into the file name to make it easier to determine the file you want
  2. make the file naming scheme compatible with Wireshark ring buffer captures, so that the Wireshark "File Set" menu option works for them

The option is available from the main menu, but only if at least one file has been selected in the file list:

Selecting the menu option will open a dialog box where the renaming scheme can be configured:

There is a preview right below the pattern box to show how the files will look like.