The purpose of a stream might not be obvious just from the title. Clearly convey what the stream is about by adding stream description.
Add a Description for the first time
Visit the Stream that you would like to have a description. If there hasn't been a description added yet, you will see the Add description in the header. Click on Add description
This will open up a modal. Type in your description then press Save & Close.
You will then see this description in the Stream header.
Edit an Existing Description
If you the stream already has a description and you would like to edit it, you can do so by clicking on Stream Settings in the upper right hand corner.
Then click on Stream details and click on the pencil icon (🖋) next to the description to make any edits.
Press save & close, and there you have it!