How to submit a forum topic anonymously?

I am writing in this doc how to submit a topic without a username. Users can submit topics anonymously if they wish. I will show you how to do it in detail.

See the screenshot and enable this option. Users can then submit topics anonymously if they wish. You can write what will be the label text of the checkbox on the frontend in the box below.

After enabling this option you will see this checkbox inside the topic submit form in the frontend and if you check this checkbox while submitting the topic, the topic will be published anonymously.

After checking the checkbox and submitting the topic it will look like this, see the below screenshot.