Recent Topics/Posts Box + more

I would like to know how do I activate the "Recent Topics/Posts" Box. I would also like to know how do I put the Chatbox in the Header Categories in the forums as well.

1. Administration Panel => Modules => Forum widgets management => Existing widgets => Recent topics;

2. Administration Panel => Modules => Chatbox => Configuration => ChatBox configuration => ChatBox display : Top of the page.

1. Where do I place the "Recent Topics" box?

Apply on mouse drag-and-drop, and move the widget to Forum widgets management, that is below, near the rest of widgets.

Did it, I have no result.

You have to do it, then click the Save button from Forum widgets management, not from Forum widgets general options. After saving it you can modify options.
P.S. Can you provide your forum url? Also, would be great if you'll take a screenshot to Forum widgets management section.