HA: add-on activation

Hi

How do I activate add-on in Home Assistant (Signum installation)? I activated Advanced Mode in personal setting, but add-on is still not active?

Many thanks!

There are no add-ons available at this time for a Signum with Home Assistant.

How can I edit the configuration.yaml?

There’s no possibility at this time to edit those, but we’re working on making it available to change configuration.yaml.

Many thanks for your quick respons.
What’s your timeline? Is beta testing possible?
It seems ridiculous to me to use another raspberry pi with a classic OS installation of HA when it is already present in fact.
Kind regards,