An application can be added to the existing cluster using the Add-on functionality

Below are the steps to add-on an application to the existing cluster

1. Navigate to the cluster and click on the Add-ons tab located in the toolbar at the top
2. Click on Add an Add-on and select the application from the Catalog Add-on dropdown that needs to be installed to your cluster. Provide the application a unique runtime name and the environment it needs to be deployed in. Labels can be added to the application using the Labels field.
3. Click on Add and this will build a row in the Add-on section’s view that will provide the details and the state of the application. System Tasks on the upper right side can be used to check the status of the successful deployment of the add-on application.