I want to do birth objects at regular intervals.

[aksmfakt132]

Not sure if I understand problem.

What prevents you to use regular birth,  and just use shape operator for that object?
Or actors maybe?

https://youtu.be/ct3vWWl86f8
ok i want like this (4:07)

I want to make the character's instantaneous form into particles
If you can do it by 'birth', please let me know how