To download the kubeconfig, navigate to Clusters and select the correct cluster. On the top right you can find a download button:
You can revoke access for already downloaded kubeconfigs by revoking the token on the cluster detail page. To do so, click on the three-dot settings icon on the right to see the option Revoke Token:
Users in the groups Owner and Editor have an admin token in their kubeconfig. Users in the group Viewer have a viewer token. Revoking the token for a user group means the kubeconfig becomes unusable for users in this group and they need to download it again. Using kubectl with the invalid kubeconfig will result in an error message. You can see which group every project member belongs to on the Members page.
