Rename all files in a folder keeping original names and adding sequential numbers

Hello All! I have a folder with many files in it of different type. I want to rename all the files, keeping their original names, but a sequence number must be added in front of each file. After the sequence number there should be a delimiter, for example a period or an underscore or just a dash to separate the sequence number from the file name and after it begin the original file name.

How do I do this?

Thanks!

Add Method: https://www.advancedrenamer.com/user_guide/method_add

Add: <Inc Nr:001>_
(see https://www.advancedrenamer.com/user_guide/tags_default )