Hover over the message or the file and click Start a thread.

After you create the thread, you or anyone else in the space can add a reply to that thread, click .

When somebody replies to a thread, you'll see a notification in the space to highlight the new replies.

Touch and hold the message and choose Start a Thread.

A new thread window opens.

After you create the thread, you or anyone else in the space can add a reply to that thread, touch and hold the message and choose Reply.

Hover over the message or the file and click Start a thread.

After you create the thread, you or anyone else in the space can add a reply to that thread, click .