To add items in a top-level folder to a list, drag the folder from the Windows Explorer and drop it on the list. The add items in a .csv file to a list, drag the .csv file from the Windows Explorer and drop it on the list.
Only relevant unified items are added to a list. Unified items means that if there are more files for the same item, like a movie file and a subtitle file, only one entry will be shown on the list. MFM tries to keep the item names short to make them easier to read and to compare.
To move items from one list to another, drag and drop items from one list to another list. To delete items from a list, select them and press the Delete key. Only the lists are changed, but the files still remain where they are.
If the collection type is changed or MFM closed, MFM will ask you if you want to save any changed lists, except the Import list.
MFM unifies the item names and combines different file types, to make the processing easier. The rules how to unify the items names can be set with regular expressions in the Setting tab.