I'm afraid it's not currently possible in the Q2A core, but a plugin could do this by adding buttons via a layer, and using the functions in qa-app-posts.php to delete/recreate the post as appropriate.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask 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.
July 15, 2020: Q2A 1.8.5 released!