How to write down this cadenza in Musescore?

Question

I am arranging Mozart's Sonata in C minor for a string trio, and I am almost done writing down the second movement. But there are 2 cadenzas that I don't understand how to write down. I can do long tuplets no problem and I used this method to write down 3 cadenzas before in Musescore(and these cadenzas are in the same sonata). But those 3 cadenzas had eighth rests as a reference value in the staff above or below. These 2 cadenzas that I haven't written down, don't have any rests as a reference value.

Here is the first of the cadenzas(for reference, the key signature is 3 flats here and it is the second movement of the sonata):

How am I supposed to get that across in Musescore? I mean the cadenza starting after the first set of sixteenths and ending before the rest of the sixteenths? Do I just add a 9/8 time signature around here to get an eighth rest for reference as the length of the cadenza and then make the time signatureand eighth rest invisible? Or is there a different way to get across the cadenza without any overlapping with the sixteenths?

Answer 1

Here's how I created this bar:

1. Enter the standard notes:

   

2. Select the last three treble clef notes, and press ctrl + shift + down (arrow) to move them to the bar below.

3. With the G selected, add 15 grace notes:

   

4. Use ctrl to select the last 12 notes, and click on the 'hemidemisemiquaver' button (or type 1)

   

5. Move to the correct place, and add a slur, and move the rests: