The lead sheet style only provides beat slashes to indicate how many beats there are in the bar.
I need to use stop time to indicate specific rhythm. For example, indicating what rhythm to play chords in without specifying the voicings, or notating drum hits without specifying what to hit.
I've looked all over the place and haven't found anything...maybe it's not even possible in logic.
Enter single notes at whichever line/space you prefer in the clef at the proper rhythms. Then Select All. Now in the partbox in the top row second to the right you will find the noteheads. Pick the notehead you want and holding the shift key drag it over one of the notes and they will all look like what you want. BYW, a long standing bug is that when you enter multiple sometimes Logic does not do it on the first note so you have to go back and do that one separately.