This appears to be a DUPLICATE of your other thread
https://www.yamahasynth.com/forum/a-specific-brass-articulation-would-be-added-to-sound

People are already trying to help you there.

I’m not sure I understand what you are looking for… but if it a sforzando (volume swell), you can accomplish this with the position of the MW on a sound as programmed in several of the “Pop Horns” Performances. The MW is used to lower the volume as you move it up…

When you initially hit the keys you have sound, you can abruptly lower the Volume by advancing the MW, and then swell the volume as you lower the MW.

I believe the original thread mentions wanting this to be automated.

What you could do is go into the Part and navigate to the "Mod/Control" -> "Control Assign" menu. Look for "Modwheel" as the source controller and change this(these) source(s) to an MS Lane. Say MS Lane 1.

An MS Lane is a controller just like the modwheel but is virtual and allows for you to program the movement of this virtual modwheel over time.

You program the MS Lane behavior with Pulses. These are like the control assignment Curves but rather than working instantaneously, they are based on movement over time.

The Pulse could start at 127 (same as the modwheel rolled all the way UP) then fall to near zero (quiet) then rise gradually. There may be a built in pulse shape that will work but I would probably create a user pulse.

I've been too busy this gig weekend to do anything with this request. At least for more details from me - expect a wait.

It could certainly be automated with a Motion Sequence — but is just as easily done with an Amplitude Envelope Generator.

Recall the Performance: “Sforzando AF1&2”
Element 1 and 2 are the soft strike brass
Element 3 and 4 are the hard strike brass
These four Elements are programmed with AEGs that will automate the unique behavior of a brass horn ‘sforzando’ articulation. Loud initially, drop off in volume, followed by a volume swell.
Select Part 1
Press [EDIT]
Along the bottom of the screen: Touch “Elem1”, “Elem2”, “Elem3”, and then “Elem4” to review the individual Element programming.
Touch “Amplitude” > “Amp EG”
Here you can see the envelopes that create the sforzando behavior.

You can adjust the “Time” and “Level” parameters to shape the behavior.
Use EDIT/COMPARE during your experiments (if you press the [EDIT] button while already in Edit, it will flash to indicate the ‘Compare’ function is engaged)… this returns all values to the originally stored condition… letting you compare your edit with the original data.

Extra Credit:
Elements 5 and 6 are programmed using XA CONTROL “A.SW1 On” to recall a Brass Fall-off Waveform. They only sound while [A.SW1] is engaged
Elements 7 and 8 are programmed using XA CONTROL “A.SW2 On” to recall a Brass sound that scoops up to the true pitch (PEG is used). They only sound while [A.SW2] is engaged

Recall the Performance: “Sforzando AF1&2”

EXCELLENT!

That is precisely the kind of info we would like Yamaha to ask their sound creators to provide for each of the presets (performances and arpeggios).

? It’s a programmable synth, how it’s done is already provided within the instrument’s edit parameters. Always is! How do you think I can describe it as I did above? Take a look… see for yourself. It helps to know the musical term “sforzando” (notated sfz) which is how I knew to look there. (“Fo Pi Cre” -Forte/Piano/Crescendo- was completely unfamiliar to me).

Explore: Learning how to review the programmer’s work by looking at and experimenting with the settings… this is the “best way” to LEARN.

Extra Credit:
Don’t forget to hit the [AUDITION] button — an audio demo is often worth two thousand words

The original referenced articulation had a velocity switch to invoke the sfz which is why I went the route of motion sequence since it can be fairly easily be velocity switched.

You can also velocity switch the AEG suggestion by using two sets of elements. Elements with the "sfz"-ized AEG that are set to react to only higher velocity levels and normal elements (with a more standard AEG) that react to lower velocity levels without overlap. This would mean doubling up on the amount of elements used (max 8 per Part).

There are other options too which become even more difficult to implement but may conserve resources.

Thank you very much for all your detailed answers.