Enable checkboxes on discussions and comments (user,search pages)

Does anybody know the way or plugin that will allow multiple deletion of comments? I need exactly for comments in the user page-comments and search-comments pages.
For example one user has submitted too many comments in 50 different threads. Or please advise the way I can delete them in quick way.
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Mark x posts in a thread, use the delete function to delete or the split function to split out to a discussion of its own.
(Marking 2 discussions lets you merge them)
https://open.vanillaforums.com/addon/splitmergefe-plugin
Ah, you wrote user page.
I only know of deleting one by one on the user wall.
I would be happy to see such feature in the next version of Vanilla. Folks, please hit like button, so people will see.