I have configured NFS on my Synology NAS. Below is the installation to create dynamic PV on the NAS.
helm repo add csi-driver-nfs https://raw.githubusercontent.com/kubernetes-csi/csi-driver-nfs/master/charts
helm install csi-driver-nfs csi-driver-nfs/csi-driver-nfs --namespace kube-system --version v4.1.0
kubectl apply -f storageClass.yaml