Document creation of Pipelines with the appropriate labels, so that those pipelines are available via the Add flow.
This documentation is probably part of the builder flow: https://docs.openshift.com/container-platform/4.7/cicd/pipelines/working-with-pipelines-using-the-developer-perspective.html#op-constructing-pipelines-using-pipeline-builder_working-with-pipelines-using-the-developer-perspective That module covers the generic flow.
Create a separate module for adding custom Pipelines to the Add flow.

Find out if there are any Parallel dev epic for this.