Add peers to existing organizations

[nikolas-digitalBabylon]

Hi,

how to add peers to existing organizations?

Assuming the default spec.yaml, you end up with a running network of 2 orgs (org1.example.com and org2.example.com). Each org has 2 peers. There is also the ordering organization, with 3 orderers.
With the network running, how to add a peer/orderer ?