Controlsense https://www.musicnotes.com/sheetmusic/mtd.asp?ppn=MN0100212 can Crescendo represent two different type notes at the same location, like in the link above; the first note of the left hand in each measure has a eighth note, but there is also a half note.
Marie_NCH You should be able to add different notes in the same location by using the "Voices" menu on the top of your screen. Select a different voice for each note.