You can use macros to insert fixed spaces after the autonumber or bullet to get the first text line to align with subsequent lines. This is not a precise method, because you can adjust space only in nbsp-width increments.
You have to determine the proper number of spaces by trial and error. And sadly, it will be different when you get to double digits in numbered lists: then you must reduce the number of nbsps by one. You could maintain a macro-variable counter (see §27.2 ), but synchronizing the count with the FrameMaker numbering would be challenging.