Under the Companion app settings, select your server, then persistent connection

https://companion.home-assistant.io/docs/notifications/notification-local/

So, you don’t need an automation per entity. You can add additional entities to the trigger seen here (you can add groups too, kitchenlights is a group of 4 lights):

As circled above, you can also set a “for” time, in this case when the light is on for 15 min.

The time condition has the option for a day off the week. Just leave the time portion blank.

To keep this all in one automation, skip the condition section and go to the action section.

Use the choose block and set the conditions under an option

The action will be a template

service: light.turn_off target: entity_id: “{{ trigger.entity_id }}” data: {}

Edit formatting

Aside from what others have said, I look at what other bands the bands I already listen to tour or collaborate with.