[cetic/pgadmin] Q : how to set default Path

[Pigmalion]

I am installing Pgadmin on my cluster and I have ingress sys that works fine for other components. But, with pgadmin I need to set a root_url or basePath threw value.yamls in order to get to the service after initial request.
My first navigation is set to trigger the service with "https://aws-aws-aws.somthing/app/pgadmin"
But after I do get to the service I am being redirected to root URL of the service which is /, thus I find my self on -"https://aws-aws-aws.somthing/_login?next=%2F_"

Version of Helm and Kubernetes:
Helm : 2.14.1
K8s: 1.16.2

What you expected to happen:

My expectation is to reach "https://aws-aws-aws.somthing/app/pgadmin/_login?next=%2F_"

PS
I am not using the ingress set up of the values.yaml
Just like any other of my services like : grafana cerebro or kibana
Thanks!