It's an ask box widget. I think that's what you are looking for??? If yes then you can activate from Admin > Layout > Ask Box click on add widget link and set position where you want it to appear.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.