Typically, the one click apps (you didn’t specify which one) they are installed via helm charts. Most but not all. Typically with any helm chart, you customize the installation via what we call a values.yaml file. This is a file you include with the installation, that over rides default values for the installation. I would look to see for your application, if in the default values there is a way to add the value you are looking to add. It sounds like you are wanting to add a custom label. This is easy enough and “should” be able to be added to the values.yaml file. The git repo for the application should have the docs that show all the customizable values for that application. I have never been successful trying to change configuration after install by editing directly the settings in k8s. Hope this helps and gives you somewhere to look. You don’t have to use the 1-click install btw. Because they use helm, you can just do the helm install yourself. This is how you are able to add custom values to your installation.