vRO custom Workflow to provision VMs through vRA to use existing NSX Edge load balance

Hi,

Any One having any experience to create vRO customize workflow which provision Web servers VMs and add these web servers into existing NSX Edge Load Balancer.

In my environment, we are using vRO/vRA 7.2 and NSX 6.2.4.

Any one having any idea how we can achieve this with vRO or vRA, i head that it can be achieved with customizing vRO workflow, so any idea which workflow is good.