[QUIP] How to correct the published date of a comment

Good day!!!
I installed QUIP and it work.
When I add a message from my website, the message is save under

Extensions -> QUIP -> Unpublished comment

I can see and modify a comment but I cna not change the published date

However, I have a couple of old message to add. When I create a message the date matches to moment when we saved it and we can not change it.

It is a small problem for a comment saved on july 2017. It's possible to edit a new comment and correct the date? If yes how?

Until now, I change the date into the database, but it's not a good solution for a secretary .

Thank for your help

The only way I can think of is to create a form to let the secretary change the date and a snippet to modify the DB.

There may be an easier way, but I don't know one.