Assuming having access to an Azure subscription with a fully configured Azure Kubernetes Service, via
az login
kubectl create clusterrolebinding kubernetes-dashboard --clusterrole=cluster-admin --serviceaccount=kube-system:kubernetes-dashboard
az aks browse --resource-group somegroup --name someclusteri can get access to Kubernetes Dashboard.
Is there a way to give temporary access to Kubernetes Dashboard to some person who does not have access to the Azure Subscription the AKS is associated with?
yes, just create appropriate kubernetes config (so the user can port-forward the dashboard pod) to the cluster and then the user will be able to connect to the dashboard.