This is an extension to the basic form support
NOTE: Support for the basic form support feature had to be removed in v2.6.0 when the Bitnami catalog updated to include standard json schema files for each chart and as a result, also for the custom form component support. We hope to re-enable the ability to define basic forms for users (see #5988) rather than the current display of all fields from the values.yaml.
In the meanwhile, have a look at the how to use the dashboard documentation.