Can't enable webhook for Google Chat app

I believe there must be something else I’m missing. I already have the necessary permissions, but I still can’t enable the webhook for the app.I’m using the Google Chat API and connecting it to a chatbot through a Workspace app, but the option to configure a webhook doesn’t appear. I’ve followed everything in the documentation, but no success so far.Could you help me out? If you have any screenshots or specific instructions, that would be really helpful.