def METHOD_NAME(self, request):
    """Custom settings content for the plugin."""
    return """
    <p>Setup for Slack:</p>
    <ol>
        <li>Create a new Slack app on <a href="https://api.slack.com/apps/new" target="_blank">this page</a></li>
        <li>Enable <i>Incoming Webhooks</i> for the channel you want the notifications posted to</li>
        <li>Set the webhook URL in the settings above</li>
    <li>Enable the plugin</li>
    """