Ableton Forum

This looks promising! I’ll have to give this a shot later today. Thank you!!

you can do this in ableton by pressing the note and then the right arrow key

create a new midi clip, and turn on "MIDI Editor Preview" button.

Then you can hold a note down on your midi keyboard and use left and right on your computer keyboard to change the length.

Adjust your grid to change ...

Cubase offers a very nice feature for the Piano Roll known as "Step Recording" and can be seen in this YouTube video: https://www.youtube.com/watch?v=9RF8X1n1mdw. As you play a note on the keyboard it adds it in accordance with the current quantize settings.

I have seen the Ableton suggestion here ...