Can automation be set at a random minute from a fixed time?

Welcome to the Forum, @menglucal! :wave:

I haven’t seen that particular request before, but that seems like something that could be added to this existing Wishlist topic:

You can visit this or other topics in the Wishlist category that interest you and click or tap the Vote button above the initial post, then add your ideas and use cases in the comments to show your support for particular features or products.

Please be aware that this is primarily a user-to-user support community and that Wyze may or may not see your comment; however, my understanding is that they periodically review Wishlist topics to gauge interest and feedback.