Helix "Start Commercial" endpoint should be usable by editors/mods
The new endpoint only allows the broadcaster to run commercials: https://dev.twitch.tv/docs/api/reference#start-commercial
The old endpoint also allowed users with the editor role to run commercials: https://dev.twitch.tv/docs/v5/reference/channels#start-channel-commercial
I believe it is of value to allow access to editors as they used to. Editors should be trusted enough to choose their own tools to support the broadcaster, as has already been the case.
Plus, if an editor's token can be used the editor's name will appear in the Activity Log on the Dashboard, rather than the broadcaster's name (assuming some sort of webpanel or bot has to be used, that the broadcaster has granted access), which may lead to confusion. This seems unavoidable for some use-cases, however where possible I would very much prefer the simpler option of using the access token of whoever actually triggered the action.

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Graf_d commented
Die Moderatoren sollten Werbung schalten können, wenn der Streamer eine kurze Pause macht.