Death Animations - Particles

I have attached an example sfx below.

Basically I need to know what I need to do to add a death animation to a particle sfx.
I know how to add a new sequence, but how do I make sure the sfx actually dissipates slowly (Currently it abrutly vanishes).

Notice that the existing sequence lasts from 0 to 1000.

Notice that every particle emitter has a Visibility track of:
0: 1
900: 0

All you need to do is shift those 900s up to the first frame of the new Death sequence. Thus the emitters won't stop at the end of birth, but will not start for Death (and so the particles will die and not be replenished there).

Is that what you need?

Yes.
I was just looking for the steps required to create proper sfx death anims.
Your method works fine, thanks.