Portworx on IKS MZ VPC Gen2 cluster

Trying to create a base cluster for installing Portworx in IKS in a Gen2 VPC. Problem is that I don’t have access to any node flavors with local storage, nor can I find documentation to add block storage to the IKS nodes.

Where can I find the missing documentation to prep a cluster for Portworx? This doc does not contain any guidance: https://cloud.ibm.com/docs/containers#vpc-gen2-gs