Hello there,
Based on the title of this thread, is it safe to assume you have used vRA to deploy a blueprint containing an NSX load balancer that has some web servers sitting behind it? and, you are asking if there is a workflow to add more webservers to the deployment, automatically adding them to the Load Balancer? If so, have a look at this VMware blog post:
How to configure Auto-Scaling for Private Cloud - VMware Cloud Management
While vRA has native capability to Scale-out/Scale-In a deployment, there is not yet a GA capability that allows for auto-scaling. However, using the post above, you can have Orchestrator scale-out your web-tier.
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