Is there a "grace note after" feature?

I’m trying to notate a grace note that will come AFTER the note. It’s like a blues style grace note that in this context will come AFTER the downbeat. I can’t seem to find a way to do this.

No, at the moment there’s no way to specify that you want a grace note to appear after a note, but you can happily have a grace note before a rest, so if you add the grace note at the rhythmic position corresponding to the end of the note, you should find it works OK.