The Prompt for File action (v8+) prompts for a selected file or folder and saves the path into a variable.
You can prompt for an existing file or folder, or for a new file or folder.
For a new file or folder, you can specify the default file name.
For an existing file, you can specify the allowed file types with a space or comma separated list of extensions or Uniform Type Specifiers such as
: Until we can provide a better description, see this macro for an example with screenshots:
MACRO: Prompt for File Action