Use the enforce topics feature if you want to make sure that your team marks each conversation with the appropriate topic.
This configuration is available at the team level. you can enforce this feature from some teams and leave it open for other teams.
You need to have an owner or admin permission to enforce adding topics.
Enforce adding topics
Go to Account Settings, then teams. Now select the team that you want to enforce the policy upon.
Now, click on Force Topic Selection, and turn the feature on
How does the Force Topic Selection feature work?
We will check if a user or a bot has added at least one topic to the conversation since it was opened. If not, the close conversation icon will be disabled until the user adds a topic.