The ranked collective is a pallet that holds the fellowship committee/s. 

What I did was add a dispatchable to ranked collective for exchanging a member with an Exchange Origin.

This is useful when a member wants to swap/exhange it's account in the collective.

You can find the details of the work done  https://github.com/paritytech/polkadot-sdk/pull/2587

The PR covers the implementation of the dispatchable, test and also benchmark for the dispatchable.

This is a small tip request for the work done on this.