You can only edit orchestration templates that are displayed under My Orchestrations in the Template List page. If you want to edit Sample templates, you can first save the sample template as your own templates and then edit them.
Log on to the Container Service console.
Click Images and Templates in the left navigation pane and click Orchestration Templates.
Click My Orchestrations, locate the template to be updated and then click Details.
Click Edit in the upper-right corner.
Edit the template content.
You can directly make modifications in the template. Or you can select a service at the right side and click Edit to modify the service or click Delete to delete the service.
In addition, you can click Add Service and select the desired image in the pop-up dialog box to add the service to the orchestration template.
Click Save in the upper-right corner to save the template content.