Trying to "pin" particles to a rigged object in Unity, don't see any documentation on controlling the pins' position in engine.

[rjdoesvr]

I have two pieces of Flex cloth and I'd like to pin the edges to a rigged object but leave the middle areas unpinned. Is there a method for controlling the pins without unpinning them?

[rjdoesvr]

Hopefully this illustrates my issue

[rjdoesvr]

Particles are attached to the sub meshes at the top of the "bend"