Deploying different lambdas without replacing the previously deployed lambda

[joelfogue]

I asked my question here: https://stackoverflow.com/questions/52390767/pipeline-replaces-previously-deployed-lambda-when-deploying-new-lambda and here: https://stackoverflow.com/questions/52428945/how-to-re-use-codepipeline-to-deploy-different-lambdas-without-replacing-an-exis

But basically, how do we deploy a second lambda by reusing the same pipeline. To achieve this, I rerun step 4 and 5 of the tutorial but it creates a changeset and replaces my previously deployed lambda function but I want to display all previously deployed lambda not just the latest one.

And we also don't want to duplicate the pipeline for each lambda that we need to deploy. So is there something I'm missing on step 4 and 5 so that it doens't keep creating a changeset and replacing the previously deployed lambda but instead deploys it next to the previous one? Hope that makes sense.
I'm new to the aws cloudformation tool and learning as much as I can; thank you for your prompt response