You can set up a stream to be the upstream source for replicas. This is especially useful if
you did not set up replication automatically when setting up replicas.
Set up Stream as Upstream Source
Describes how to set up the current stream as the upstream source for a replica if the replica was not set up to automatically resync with the current stream.
Removing Upstream Sources for a Stream
Explains how to un-register a stream as an upstream source for a stream using either the Control System or the CLI.