Exam Slack-Certified-Admin Topic 1 Question 9 Discussion

Kathleen is a Workspace Owner who leads the marketing department at a mid-sized company in Pune, India.
She keeps receiving new campaigns at her desk to review and approve, but she has never heard of these initiatives. Many of her colleagues are equally confused. She has a few key public channels where she has explained to her team that marketing conversations should take place, so she wonders where her team is communicating. Upon investigation, she discovers that users are creating their own unique channels for each marketing campaign. Subsequently, important employees have been excluded, duplicate projects exist, and information is fragmented.
To enhance transparency and collaboration, Kathleen emphasizes that users should discuss projects together in the agreed-upon channels, as they often involve the same people.
Which settings and permissions should Kathleen change to reinforce this message?